1 00:00:01,237 --> 00:00:06,027 (MISSION CONTROL) Pegasus, proceed with final checklist for trans-Venus injection. 2 00:00:06,197 --> 00:00:08,631 (YVAN) Copy that. 3 00:00:08,797 --> 00:00:13,552 (NARRATOR) It is our destiny to explore the far frontiers of space. 4 00:00:13,717 --> 00:00:17,073 Last century, we took the first steps to the moon. 5 00:00:18,837 --> 00:00:23,308 Imagine we were ready to take the next giant leap. 6 00:00:23,477 --> 00:00:26,947 This is the story of a manned voyage to the planets. 7 00:00:27,117 --> 00:00:31,315 Humanity's greatest challenge and ultimate adventure. 8 00:00:32,397 --> 00:00:39,075 (MISSION CONTROL) Event timer countdown. Five, four, three, two, one. 9 00:01:28,237 --> 00:01:30,353 (NARRATOR) The grand tour of the solar system 10 00:01:30,517 --> 00:01:33,315 has brought Pegasus and her crew from Venus and Mars 11 00:01:33,477 --> 00:01:38,790 towards the outer gas giant of Jupiter and the most dangerous manoeuvre of the mission. 12 00:01:38,957 --> 00:01:43,553 The only way to slow down into orbit is by flying through Jupiter's upper atmosphere, 13 00:01:43,717 --> 00:01:48,711 but if their trajectory is even a fraction off... they'll burn up. 14 00:01:49,557 --> 00:01:54,267 Pegasus, you're due to enter Jovian atmosphere in two minutes. Looking at a maximum of 8G. 15 00:01:55,237 --> 00:01:57,353 Good luck, guys. 16 00:01:57,517 --> 00:01:59,587 (TOM) 2G. 17 00:02:01,157 --> 00:02:03,830 (YVAN) Going into free-flow position. 18 00:02:03,997 --> 00:02:07,546 - That's a continuing flow. - 2G and rising. 19 00:02:08,517 --> 00:02:11,589 - 4G. - Heat shield temperature rising. 20 00:02:11,757 --> 00:02:14,874 (NINA) Suits are about 15. 21 00:02:15,877 --> 00:02:19,028 - This isn't right. - 7G. 22 00:02:20,237 --> 00:02:22,228 8G. 23 00:02:22,837 --> 00:02:25,874 - We've lost hydraulics on the main engine. - (YVAN) 9G. 24 00:02:26,037 --> 00:02:28,073 That's impossible. 25 00:02:40,877 --> 00:02:42,674 (ALARM BLARES) 26 00:02:42,837 --> 00:02:48,116 (YVAN) Heat shield temperature's at 12,700 degrees. 27 00:02:48,277 --> 00:02:51,792 Max G was 9.7. 28 00:02:51,957 --> 00:02:56,394 (0VERLAPPING V0ICES) 29 00:03:05,117 --> 00:03:07,836 Lessard and Pearson have passed out. 30 00:03:11,357 --> 00:03:14,155 How many fingers am I holding up? 31 00:03:14,317 --> 00:03:17,514 Twelve! Three, 0K? 32 00:03:30,637 --> 00:03:34,027 (NARRATOR) Jupiter is the biggest planet in the solar system. 33 00:03:34,197 --> 00:03:38,270 With its massive gravity, huge magnetic field and over 60 moons, 34 00:03:38,437 --> 00:03:41,156 it's almost a solar system in itself. 35 00:03:47,437 --> 00:03:51,828 (LL0YD ) Everything about Jupiter is off the scale - clouds the size of continents, 36 00:03:51,997 --> 00:03:55,990 lightning bolts that could incinerate a city, hurricanes raging for centuries. 37 00:03:56,157 --> 00:04:00,469 Much bigger and Jupiter would've become fusion and become a second sun. 38 00:04:01,157 --> 00:04:05,867 The Jupiter system contains the most volcanic world we know - the moon of Io. 39 00:04:06,037 --> 00:04:08,756 This primitive world mirrors Earth's early history. 40 00:04:08,917 --> 00:04:13,468 Pegasus will send one of her crew down to its highly unstable surface. 41 00:04:14,557 --> 00:04:18,391 (Z0Ë) We've got four landing sites, depending on Io's mood when we arrive. 42 00:04:18,557 --> 00:04:22,027 The interior's constantly stirred up by Jupiter's gravitational tide, 43 00:04:22,197 --> 00:04:26,952 so it's literally turning itself inside out, so our maps date real fast. 44 00:04:27,117 --> 00:04:31,588 That's what makes it so exciting. It's the most volcanic object in the solar system. 45 00:04:32,437 --> 00:04:36,874 (NARRATOR) It's not just the constant eruptions that makes Io a dangerous place to land, 46 00:04:37,037 --> 00:04:40,871 it also orbits within Jupiter's lethal radiation belts. 47 00:04:41,037 --> 00:04:43,232 (YVAN) Any ordinary suit and you'd be dead. 48 00:04:43,397 --> 00:04:47,754 This one has a thick layer of polyethylene to absorb high-energy particles 49 00:04:47,917 --> 00:04:50,385 and it can generate its own magnetic field. 50 00:04:50,557 --> 00:04:54,266 The problem with this one is moving around. It's too heavy. 51 00:04:54,437 --> 00:04:59,033 But Io's gravity is more like our moon's, so it's not really about brute force. 52 00:04:59,197 --> 00:05:05,432 - I think you'll find it's even harder in low gravity. - We're still negotiating who does Io. 53 00:05:05,597 --> 00:05:10,387 There's a lot of radiation up there. There's a good chance we'll come back sterile. 54 00:05:10,557 --> 00:05:15,472 So I'm putting some eggs aside for safekeeping. Are you asking the guys this question? 55 00:05:15,637 --> 00:05:20,836 Solar radiation has already caused illness in one of the crew after just a year in space. 56 00:05:20,997 --> 00:05:27,994 (JOHN) ..water separator and SOTR completed. I've updated the IMS database. 57 00:05:28,157 --> 00:05:33,390 Capcom, I have some results here. I need a private line for John Pearson. 58 00:05:33,557 --> 00:05:37,675 (JOHN) ..which concludes our first crew status report from Jupiter orbit. 59 00:05:37,837 --> 00:05:43,309 Everyone in good shape, continuing on high antioxidant medication. Goodnight, Claire. 60 00:05:57,117 --> 00:06:01,030 Control, Pegasus. Site A covered in fresh ash. 61 00:06:01,837 --> 00:06:07,195 Site B obscured with activity from Ra Patera. Both landing sites totally inoperable. 62 00:06:07,357 --> 00:06:12,670 Do we have a go for Maasaw at Site C or should we default to the plain side? 63 00:06:12,837 --> 00:06:14,793 That should shut them up! 64 00:06:14,957 --> 00:06:18,791 - Maasaw's dormant! - At the risk of sounding like a broken record, 65 00:06:18,957 --> 00:06:24,953 radiation levels on that side of Io aren't just high, they're unpredictable and your EVA has other... 66 00:06:25,117 --> 00:06:28,507 So we land on Io and we don't visit a volcanic site? 67 00:06:28,677 --> 00:06:31,237 - Who's ''we''?! - She's got a radiation shield! 68 00:06:31,397 --> 00:06:33,786 Tell it to John Pearson! 69 00:06:38,517 --> 00:06:41,236 We decided to send people, not robots... 70 00:06:41,397 --> 00:06:44,594 - We are supposed to manage the risk. - How long? 71 00:06:46,437 --> 00:06:48,632 If she goes to Maasaw. 72 00:06:55,117 --> 00:06:57,312 - Four hours. - Four? 73 00:06:59,157 --> 00:07:03,867 We've got a couple of options for volcanoes. Site C is problematic because of radiation, 74 00:07:04,037 --> 00:07:07,427 but there's a back-up site, which is a safe bet... 75 00:07:07,597 --> 00:07:12,148 largely because it's miles away from anything interesting - no one wants to end up there. 76 00:07:14,517 --> 00:07:19,750 (TOM) Control, Pegasus 24 hours from Io insertion, still with no landing site, 77 00:07:19,917 --> 00:07:22,556 running final EVA checks. 78 00:07:23,157 --> 00:07:25,352 Fringe valves on and locked. 79 00:07:29,597 --> 00:07:32,794 Tell me the truth...do I look fat in this? 80 00:07:35,037 --> 00:07:37,028 - No, no! - Yes! 81 00:07:40,397 --> 00:07:45,551 It's a non-equatorial landing for Hermes. We'll be sending through the new D.0. burn figures. 82 00:07:45,717 --> 00:07:50,188 - You were right, Yvan, it's Maasaw. - (NINA) They don't make it easy. 83 00:07:50,357 --> 00:07:52,951 - No. - Hey, John, you got mail. 84 00:08:00,037 --> 00:08:01,834 Lymphoma. 85 00:08:05,037 --> 00:08:09,986 Good dose of chemo might have helped... except I couldn't take anything that toxic. 86 00:08:10,157 --> 00:08:14,594 It would all end up in the water and contaminate everyone else. 87 00:08:15,157 --> 00:08:18,866 (TOM) John and I have had a meet to discuss how his condition 88 00:08:19,037 --> 00:08:22,188 may impact on the mission objectives and timeline. 89 00:08:22,357 --> 00:08:28,114 We've agreed to postpone any announcement to the rest of the crew until after Zoë's EVA. 90 00:08:33,677 --> 00:08:40,071 (J0HN CHANTS) ..take a walk, take a rest, then take a rest. 91 00:08:46,357 --> 00:08:51,147 John's given me these for the radiation. I'm not gonna take them. 92 00:08:52,757 --> 00:08:57,228 I want to be sharp when I'm down there, not drugged up to my eyeballs. 93 00:08:57,397 --> 00:09:00,514 I've waited too long for anything to cloud this experience. 94 00:09:14,717 --> 00:09:19,632 It sure is stunning. We can actually pick out individual volcanoes. 95 00:09:19,797 --> 00:09:23,392 (ZOË) I can see some ejecta, too. Look at those plumes. 96 00:09:23,557 --> 00:09:26,355 Maasaw Patera, here I comeI 97 00:09:26,517 --> 00:09:30,066 That's enough direct sightseeing. We'll make do with the cameras. 98 00:09:31,797 --> 00:09:36,507 -Just call me Dr Killjoy. - No, John, you keep an eye on those counters. 99 00:09:36,677 --> 00:09:41,273 - I wanna tell my grandchildren about this. - Roger that. 100 00:09:46,157 --> 00:09:50,548 (TOM) Zoë, got enough to keep you busy for the next four hours? 101 00:09:50,717 --> 00:09:54,107 (ZOË) This from the guy who had three weeks on MarsI 102 00:09:54,277 --> 00:09:57,394 I've got enough to keep me going for monthsI 103 00:09:57,557 --> 00:10:00,754 (TOM) However long you get, it's never enough. 104 00:10:03,197 --> 00:10:05,392 (ZOË) Passing over a weak plume. 105 00:10:05,557 --> 00:10:10,153 It's magnificentI Low G and no air to distort the flow. 106 00:10:10,317 --> 00:10:14,708 It really does look like one big glass-blowing factory. It's unreal. 107 00:10:16,797 --> 00:10:20,631 - Looking good, Hermes. - Computers add a couple of kilometres. 108 00:10:20,797 --> 00:10:24,267 - Switching to manual. - (L0UD BUMP) 109 00:10:24,437 --> 00:10:28,032 This is one grumpy piece of rock. Even the gravity's uneven. 110 00:10:31,997 --> 00:10:34,591 Going into landing radar checks. 111 00:10:34,757 --> 00:10:39,547 (T0M) Altitude is good, descent rate good. Fuel, 23%. Take your time, Zoë. 112 00:10:43,677 --> 00:10:46,669 Half forward, coming down a half now. 113 00:10:50,597 --> 00:10:53,589 Contact light. Engine shutdown. 114 00:10:54,837 --> 00:11:00,036 I'm on the surface, Pegasus. Checking systems. Configuring abort sequence. 115 00:11:00,197 --> 00:11:02,870 You're down, Zoë. Control are gonna love you! 116 00:11:03,037 --> 00:11:05,790 They ain't seen nothin'yetI 117 00:11:05,957 --> 00:11:09,313 Hermes is on solid ground about 300 metres from the crater. 118 00:11:09,477 --> 00:11:16,076 We have no reports of any activity at Maasaw, so Zoë is proceeding with her EVA. 119 00:11:18,237 --> 00:11:23,027 (ZOË) It's a spectrum of browns, ochres, deep, deep reds. 120 00:11:23,197 --> 00:11:26,075 These are primitive lava flows all right. 121 00:11:26,237 --> 00:11:30,515 I'm standing on a silicate crust. It's covering the sulphur in places. 122 00:11:31,157 --> 00:11:34,752 But it's weak. My feet are breaking through. (GASPS) 123 00:11:34,917 --> 00:11:37,750 (RUMBLING) 124 00:11:37,917 --> 00:11:42,672 I thought the ground was giving way. Hermes is rocking, too. 125 00:11:42,837 --> 00:11:44,555 (RUMBLING) 126 00:11:44,717 --> 00:11:49,632 - It's activity at Patera. - We can see a minor eruption. You're fine. 127 00:11:49,797 --> 00:11:55,588 Check your head up. Can you confirm your radiation level of 1425 rads? 128 00:11:55,757 --> 00:11:59,909 (Z0Ë) Shields are fine. My guardian angel is on duty. 129 00:12:00,477 --> 00:12:03,674 Take smaller steps and lean forward into the suit. 130 00:12:03,837 --> 00:12:08,433 You're using up your 02. You're down 10% already. How do you feel? 131 00:12:08,597 --> 00:12:10,986 Great. No problems. 132 00:12:12,437 --> 00:12:16,828 0ne fifth gravity isn't easy in this suit. It doesn't give an inch. 133 00:12:18,237 --> 00:12:20,831 (Z0Ë BREATHES HEAVILY) 134 00:12:20,997 --> 00:12:26,071 There's a blow about 100 metres away. It's a metre or so across. 135 00:12:26,237 --> 00:12:30,947 It looks like molten sulphur. It's white and it's venting something. I'll get a sample. 136 00:12:31,117 --> 00:12:33,347 (BREATHES HEAVILY) 137 00:12:33,517 --> 00:12:37,510 (ZOË MUTTERS INAUDIBLY TO HERSELF) 138 00:12:37,717 --> 00:12:40,311 (GASPS) This is tough. 139 00:12:40,477 --> 00:12:42,786 Flight, this is Surgeon. 140 00:12:43,917 --> 00:12:46,636 - What is it? - She may be in an area 141 00:12:46,797 --> 00:12:50,028 - of concentrated magnetic flux. - Copy that. 142 00:12:50,197 --> 00:12:54,190 - It's averaging 1400 rads. - Copy that. It's John's call. 143 00:12:54,357 --> 00:12:58,350 - Doses are more variable than we thought. - Make your recommendations. 144 00:12:58,517 --> 00:13:00,712 John will make the call. 145 00:13:03,237 --> 00:13:05,626 (Z0Ë) The surface is so soft. 146 00:13:06,837 --> 00:13:11,228 - I'm getting the hang of it. - You're doing a great job, Zoë. 147 00:13:11,397 --> 00:13:13,592 That suit is a disaster. 148 00:13:13,757 --> 00:13:16,908 - Too much radiation getting through. - Let's cut it short. 149 00:13:17,077 --> 00:13:19,352 - She won't thank you. - Don't need her to. 150 00:13:20,837 --> 00:13:24,034 (JOHN) Zoë,..you've got one hour. 151 00:13:25,117 --> 00:13:27,108 You're kidding me. 152 00:13:29,677 --> 00:13:33,113 - You're kidding me! - Sorry. 153 00:13:35,277 --> 00:13:39,953 (Z0Ë) Sample 04 is a core sample. 12 millimetres. 154 00:13:40,117 --> 00:13:42,995 You're getting some great stuff, but take it easy. 155 00:13:43,157 --> 00:13:47,469 (ZOË PANTS) I'm way behind. (JOHN) You're not. Look at your temperature. 156 00:13:48,117 --> 00:13:51,427 Ease back. You can't do four hours' work in one hour. 157 00:13:51,597 --> 00:13:56,227 Flight, call her back. You might reach them in time to make a difference. 158 00:13:59,637 --> 00:14:03,107 (CLAIRE) 1520 rads...1530 rads. 159 00:14:10,757 --> 00:14:13,794 - Rads have picked up. - Scrub the EVA. 160 00:14:14,917 --> 00:14:18,910 (JOHN) Increased radiation readings. We need you to return to Hermes. 161 00:14:19,077 --> 00:14:22,672 Listen... Tom? Is Tom there? 162 00:14:22,837 --> 00:14:26,671 (Z0Ë GASPS) I'm fine. I'm nearly at the rim. 163 00:14:26,837 --> 00:14:31,752 This is Tom. Your consumables are low and you're losing the light. 164 00:14:31,917 --> 00:14:36,115 - Repeat, return to Hermes immediately. - Copy, Pegasus. Sorry. 165 00:14:36,277 --> 00:14:39,269 (BREATHES HEAVILY) 166 00:14:40,837 --> 00:14:43,749 - We're gonna lose her. - Nightfall in 12 minutes. 167 00:14:43,917 --> 00:14:48,115 (TOM) Abandon the sample trolleys and go immediately to Hermes. 168 00:14:48,277 --> 00:14:50,632 (MUMBLES INC0HERENTLY) 169 00:14:51,277 --> 00:14:53,916 (YVAN SPEAKS RUSSIAN) 170 00:14:54,077 --> 00:14:57,990 - (YVAN SH0UTS IN RUSSIAN) - I'm walking! I'm going! 171 00:14:58,157 --> 00:15:00,227 - (YVAN SH0UTS) - God! 172 00:15:00,397 --> 00:15:03,753 (CRACKLING INTERFERENCE) 173 00:15:05,837 --> 00:15:10,592 - She's in a terrible state. - Heart rate 175, suit temperature 27 degrees. 174 00:15:11,477 --> 00:15:14,469 (Z0Ë BREATHES HEAVILY) 175 00:15:21,237 --> 00:15:26,106 - What's happening?! - (TOM) It's night. Turn your helmet light on. 176 00:15:36,077 --> 00:15:38,272 (Z0Ë) Jupiter! 177 00:15:38,437 --> 00:15:41,907 Wow! Look at that! 178 00:15:42,077 --> 00:15:44,545 (TOM) Turn your back on it, Zoë, 179 00:15:46,277 --> 00:15:49,747 - Keep moving, Zoë. - Look at Hermes. 180 00:15:49,917 --> 00:15:52,909 (NINA) We've put the lights on. Can you see? 181 00:15:57,517 --> 00:15:59,235 (NINA) Zoë? 182 00:16:03,477 --> 00:16:07,072 Look at that. There's a sulphury frost forming on my suit. 183 00:16:11,437 --> 00:16:17,353 0h! 0h! Are you getting this, you guys? Can you believe this? 184 00:16:24,117 --> 00:16:30,556 (JOHN) Breathe slowly and steadily, Zoë, Keep it steady. Small steps, now. 185 00:16:37,957 --> 00:16:41,154 - A few more metres. - Get inside and close the door. 186 00:16:41,317 --> 00:16:45,026 We'll launch from here. Zoë? 187 00:16:45,197 --> 00:16:48,428 Will all of you just shut up, please?I 188 00:16:48,597 --> 00:16:53,796 (JOHN) We have airlock sealed on Hermes. (TOM) Remote launch procedure initiated. 189 00:16:57,317 --> 00:17:01,469 (YVAN) Successful separation. Delta Vis good. Nominal pitch. 190 00:17:13,437 --> 00:17:15,905 (NARRATOR) All the samples were abandoned. 191 00:17:16,077 --> 00:17:19,831 All the advantages of landing an astronaut on Io were lost. 192 00:17:19,997 --> 00:17:23,307 Five years of planning were wasted. 193 00:17:27,757 --> 00:17:32,148 (YVAN) Radio locking system is on. We're approaching the same inertial altitude. 194 00:17:34,997 --> 00:17:37,989 (TOM) Four centimetres, bringing her in. 195 00:17:43,277 --> 00:17:47,475 - Contact. Capture. - Hard dock. Equalising pressure. 196 00:17:47,637 --> 00:17:52,188 - Coming up to 14.7 psi. - Let's get her. 197 00:18:02,157 --> 00:18:05,149 They should've sent a robot. Cheaper and more effective. 198 00:18:05,317 --> 00:18:08,275 All I did was scare everyone half to death. 199 00:18:11,717 --> 00:18:14,914 Yvan said he couldn't have done any better. 200 00:18:18,517 --> 00:18:22,226 (NARRATOR) Mission Control's schedule allows little time for reflection. 201 00:18:22,397 --> 00:18:26,868 Pegasus continues in orbit around Jupiter to reach another moon, 202 00:18:27,037 --> 00:18:29,426 the icy world of Europa. 203 00:18:32,157 --> 00:18:36,947 (LL0YD ) Let's hope we have better luck at Europa. Probably the best bet for life after Mars. 204 00:18:37,117 --> 00:18:42,316 Its surface is ice, but those gravitational tides that heat up the inside of Io do the same here. 205 00:18:42,477 --> 00:18:44,911 Underneath the ice could be an ocean. 206 00:18:54,077 --> 00:18:58,116 (NINA) Asteroid strikes cause enough melting to bring materials up from the interior. 207 00:18:58,277 --> 00:19:03,397 If we can find liquid water even that far from the sun, there could be life. 208 00:19:03,557 --> 00:19:05,752 (NINA) Down to 10 metres a second. 209 00:19:05,917 --> 00:19:10,513 (NARRATOR) The plan at Europa is to send an unmanned lander to sample the surface. 210 00:19:10,677 --> 00:19:14,989 There will be no repeat of the disastrous experience on Io. 211 00:19:21,957 --> 00:19:25,666 We're getting a picture. Performance nominal. What a view. 212 00:19:37,077 --> 00:19:42,913 (NINA) Drill stand deployed and up to speed. String cache in place...and contact. 213 00:19:43,077 --> 00:19:47,229 Core sample secure. That's a go for launch. Robots rule. 214 00:19:54,957 --> 00:19:58,347 (NARRATOR) The probe returns after collecting its precious sample. 215 00:19:58,517 --> 00:20:04,513 With more water than Earth, Europa holds greater hope for life than anywhere but Mars. 216 00:20:04,677 --> 00:20:07,953 After Io, the crew are desperate for good news. 217 00:20:08,117 --> 00:20:11,314 - I'm opening the sample canister. - (J0HN C0UGHS) 218 00:20:11,477 --> 00:20:15,186 - Are you 0K? - (J0HN GASPS) Fine. 219 00:20:17,197 --> 00:20:19,665 - You sure? - Go on. 220 00:20:19,837 --> 00:20:23,307 - Look, this can wait. Why don't you... - No. This helps. 221 00:20:26,477 --> 00:20:29,514 The ice is very well compacted. 222 00:20:29,677 --> 00:20:33,636 Mainly translucent. I can see some darker... 223 00:20:33,797 --> 00:20:37,506 (NARRATOR) Pegasus now enters the longest leg of the grand tour so far. 224 00:20:39,157 --> 00:20:44,709 10 months away lies the jewel of the solar system - the gas giant Saturn. 225 00:20:46,797 --> 00:20:51,393 It has cloud belts and storms like Jupiter - the rings are one obvious difference - 226 00:20:51,557 --> 00:20:54,867 but Saturn is much lighter, its density is less than water. 227 00:20:55,037 --> 00:20:57,870 If you found an ocean large enough, Saturn would float. 228 00:20:59,277 --> 00:21:03,509 (NARRATOR) Not all the crew find Jupiter so easy to leave behind. 229 00:21:03,677 --> 00:21:07,511 (Z0Ë) You wait five years to land there and they give you four hours. 230 00:21:07,677 --> 00:21:09,668 (NINA) Zoë's still depressed. 231 00:21:09,837 --> 00:21:13,307 When you've waited five years for your opportunity... 232 00:21:13,477 --> 00:21:15,991 (NINA) She's taking it so personally. 233 00:21:16,157 --> 00:21:18,910 If it bores you guys, imagine how I feel... 234 00:21:19,077 --> 00:21:24,470 John's definitely sick. Everyone's pretending it's not happening. 235 00:22:06,237 --> 00:22:11,357 (JOHN) They've taken a vote... and they're insisting I move onto the strong stuff. 236 00:22:14,117 --> 00:22:18,030 Must be agony for them, but I can't have that getting into the water. 237 00:22:22,717 --> 00:22:27,313 (SIGHS) If I could just hang on till Saturn. I'd really like to see Saturn. 238 00:22:39,677 --> 00:22:42,271 (Z0Ë) 0nly four months to go. 239 00:22:44,357 --> 00:22:47,349 I defy anyone to stay miserable, looking at Saturn. 240 00:22:47,517 --> 00:22:50,827 It's got to be the most gorgeous planet in the solar system. 241 00:22:51,637 --> 00:22:55,425 You can't stay self-absorbed in the middle of all this. 242 00:22:57,157 --> 00:22:59,512 God, I hope I don't get religious. 243 00:23:02,557 --> 00:23:07,950 (T0M) Today's our 748th day in space, which beats the record of Mir cosmonaut Avdeyev. 244 00:23:08,117 --> 00:23:11,905 - (YVAN SPEAKS RUSSIAN) - Maybe we should count in Avdeyev years! 245 00:23:12,077 --> 00:23:14,545 (T0M) Happy New Year! 246 00:23:15,557 --> 00:23:17,275 (C0UGHS) 247 00:23:18,277 --> 00:23:24,671 We are moving John out of his sleeping module. Zero G should be more comfortable for him. 248 00:23:24,837 --> 00:23:29,035 The downside is he will lose some muscle tone in the long term. 249 00:23:36,037 --> 00:23:38,756 Should be a nice way to go. 250 00:23:41,997 --> 00:23:44,465 (TOM) OK, ready for some zero G? 251 00:23:44,637 --> 00:23:46,628 (J0HN) I'm ready. 252 00:23:47,877 --> 00:23:51,586 (NINA) We'll get you to the ladder before we stop the centrifuge, 0K? 253 00:23:53,637 --> 00:23:56,356 That's one small step for me... 254 00:24:11,837 --> 00:24:15,432 - There you go. - (J0HN SIGHS) 0h, yes! 255 00:24:26,477 --> 00:24:31,790 I finished the Europa samples. I've run a mass spec on the particulate matter. 256 00:24:31,957 --> 00:24:34,949 The results are conclusive. 257 00:24:35,117 --> 00:24:37,108 No sign of life. 258 00:24:43,397 --> 00:24:49,586 Pegasus will begin her tour of Saturn by sending a probe to its most mysterious moon - Titan. 259 00:24:54,957 --> 00:24:59,747 Bigger than the planets Mercury or Pluto, with an atmosphere denser than Earth's. 260 00:25:09,557 --> 00:25:13,391 Titan is an amazing opportunity. It's the only moon with its own atmosphere. 261 00:25:13,557 --> 00:25:16,310 Mostly nitrogen, but a lot of hydrocarbons. 262 00:25:16,477 --> 00:25:22,950 It's not far off being a sort of...primordial Earth. You have the elements for life, but in deep freeze. 263 00:25:28,637 --> 00:25:31,674 (YVAN) The telemetry systems look fine. 264 00:25:31,837 --> 00:25:34,192 - Alt is 10 metres per second. - (BLEEPING) 265 00:25:35,397 --> 00:25:41,347 - Voltage spike. Where's it coming from? - And another. Did we see this in the sims? 266 00:25:42,197 --> 00:25:44,188 (YVAN) Too late now. 267 00:25:45,277 --> 00:25:47,074 (BLEEPING) 268 00:25:50,437 --> 00:25:55,636 (MAN) No signal for two hours, Flight. We're in a search pattern with high gain antenna. 269 00:25:58,037 --> 00:26:03,031 Telemetry was intermittent during descent. We lost everything five minutes before it hit Titan. 270 00:26:09,797 --> 00:26:14,393 Might've made it. Might be busy sampling away down there. 271 00:26:14,557 --> 00:26:17,276 Well...we'll never know. 272 00:26:19,917 --> 00:26:22,192 Robots. 273 00:26:23,237 --> 00:26:25,228 (NARRATOR) Four days after leaving Titan, 274 00:26:25,397 --> 00:26:30,232 Pegasus will enter the largest gap in Saturn's rings, the Cassini Division, 275 00:26:30,397 --> 00:26:33,912 a delicate manoeuvre with plenty of debris to avoid. 276 00:26:46,277 --> 00:26:50,111 (YVAN) Radiators are taking some impacts. (TOM) We still OKfor an EVA? 277 00:26:50,277 --> 00:26:53,986 No good correlation between your solution and what we've got here. 278 00:26:54,157 --> 00:27:00,392 - We're working on a minor course correction. - (T0M) Tell me the next one is going to be it. 279 00:27:00,557 --> 00:27:04,550 They'll be coming in at four degrees, but we'll need a few more burns. 280 00:27:04,717 --> 00:27:09,711 Should place them in the Cassini Division at the same rate as the debris, minimise impacts. 281 00:27:25,797 --> 00:27:28,516 It's the most beautiful place I've been. 282 00:27:30,197 --> 00:27:33,587 The endless tumbling is mesmerising. 283 00:27:37,717 --> 00:27:40,106 I could watch them for ever. 284 00:27:44,917 --> 00:27:47,715 (NINA) I'm out at 20 centimetres per second. 285 00:27:50,597 --> 00:27:57,594 I've lost the sense of the ring structure now. It's just a...slow-motion blizzard of rocks. 286 00:28:07,237 --> 00:28:10,866 Particles range in size from dust to... 287 00:28:11,637 --> 00:28:15,232 ..fragments, well, the size of a bus. 288 00:28:29,757 --> 00:28:31,349 Gotcha! 289 00:28:38,957 --> 00:28:43,394 - 0h! - (ZOË) Nina...what's wrong? 290 00:28:43,557 --> 00:28:45,388 - Nina? - Nothing. 291 00:28:46,397 --> 00:28:50,709 - You look so small. - OK, let's get you back. Right now. 292 00:28:50,877 --> 00:28:53,869 (NINA) Wait a minute. It's getting dark. 293 00:28:54,957 --> 00:28:58,916 Something's not quite right, Pegasus. You seem a little faint. 294 00:28:59,077 --> 00:29:03,787 - Can you be more specific? - Vision is becoming opaque. 295 00:29:03,957 --> 00:29:08,394 It's weird. The suit's reading 0K, but there's a definite... 296 00:29:08,557 --> 00:29:10,548 Try wiping your visor. 297 00:29:18,717 --> 00:29:21,436 Hey, it's dust! Thanks, Zoë. 298 00:29:21,597 --> 00:29:26,273 You're attracting the dust electrostatically. Better get back before your jets choke. 299 00:29:26,437 --> 00:29:30,430 0h, it's amazing! Are you getting this? 300 00:29:33,957 --> 00:29:35,549 Zoë? 301 00:29:38,597 --> 00:29:40,189 Yvan? 302 00:29:44,117 --> 00:29:45,914 Pegasus? 303 00:29:50,677 --> 00:29:53,953 Oh, it's amazingI Are you getting this? 304 00:29:54,117 --> 00:29:58,474 Capcom, they've done a fantastic job. Let them know. 305 00:29:58,637 --> 00:30:02,630 (CLAIRE) Flight...Pearson's ECG has flat-lined. 306 00:30:10,997 --> 00:30:12,988 (NINA) Zoë? 307 00:30:16,157 --> 00:30:17,749 Yvan? 308 00:30:17,917 --> 00:30:21,626 - Pegasus? - (ZOË) You have to come in now. 309 00:30:59,117 --> 00:31:01,312 Any thoughts? 310 00:31:01,477 --> 00:31:05,311 They'll either be even more determined or desperate to come home. 311 00:31:05,477 --> 00:31:07,866 Are they emotionally equipped to go on? 312 00:31:08,037 --> 00:31:10,232 - That's their call. - Now it's THEIR call. 313 00:31:10,397 --> 00:31:13,150 - What do you think? - What will they do? 314 00:31:13,317 --> 00:31:16,627 They're going offline the next 24 hours. Tom's suiting up. 315 00:31:16,797 --> 00:31:19,789 There wasn't any EVA at this stage, was there? 316 00:31:23,797 --> 00:31:26,186 (NARRATOR) Deliberately breaking communication 317 00:31:26,357 --> 00:31:30,145 is a situation unprecedented in the history of space flight, 318 00:31:30,317 --> 00:31:34,469 but no previous mission has had to deal with the death of a colleague. 319 00:31:34,637 --> 00:31:38,949 Until now, fatalities have involved entire crews with no survivors. 320 00:31:43,757 --> 00:31:46,749 Pegasus, Control. Please advise your status. 321 00:32:22,837 --> 00:32:28,787 (J0HN) I don't see it as giving up anything. I just won the lottery. It's you lot I feel sorry for. 322 00:32:28,957 --> 00:32:32,950 I mean, you'll see the pictures... but you'll just never know. 323 00:32:48,197 --> 00:32:51,553 (NARRATOR) The crew has maintained radio silence for 24 hours 324 00:32:51,717 --> 00:32:56,552 and suspended all procedures while they decide the future of the grand tour. 325 00:32:57,317 --> 00:33:01,310 Saturn has always represented a critical choice in the flight plan. 326 00:33:01,477 --> 00:33:07,188 Whether to return home or continue to Pluto and so add another three years to the mission. 327 00:33:10,317 --> 00:33:15,596 Pegasus, Control. Advise your status, please. You've got some very worried people... 328 00:33:15,757 --> 00:33:17,748 Control, this is Pegasus. 329 00:33:19,797 --> 00:33:24,791 Sorry about the time-out, Control. We just needed a clear night to sleep on it. 330 00:33:25,917 --> 00:33:31,628 We have decided to continue the mission to Pluto. 331 00:33:31,797 --> 00:33:35,631 We have one or two operational issues we'd like you to look at. 332 00:33:36,237 --> 00:33:39,946 We're looking to you for a major overhaul of the flight plan 333 00:33:40,117 --> 00:33:42,836 and the timeline for our objectives. 334 00:33:42,997 --> 00:33:47,673 We need to reassess the workload and re-prioritise... 335 00:33:49,437 --> 00:33:53,396 ..and we'd like an input on that. Our proposals are... 336 00:33:53,557 --> 00:33:59,427 - 0ne or two operational issues. - Really? Looks like a list of demands. 337 00:34:00,637 --> 00:34:03,788 They've had a setback and need to feel in control. 338 00:34:03,957 --> 00:34:08,348 They need to feel we're not treating them like machines. As long as the science gets done. 339 00:34:08,517 --> 00:34:14,228 They'd like to test more of what they collected, but it's best to analyse samples here in the labs. 340 00:34:14,397 --> 00:34:16,547 I'm sure they'll reconsider that one. 341 00:34:33,117 --> 00:34:37,156 (LL0YD ) If she fools around with those samples, we won't have anything uncontaminated. 342 00:34:37,317 --> 00:34:41,993 - Crushing them up to see if she can get... - Shall we continue, please? Point 14. 343 00:34:42,157 --> 00:34:47,515 Re-prioritise use of the Michelson telescope. Spend more time looking for Earth-like planets. 344 00:34:47,677 --> 00:34:51,750 If they want to do that, they'll need to analyse an atmosphere. 345 00:34:53,237 --> 00:34:57,992 - They'd have to reconfigure the spectroscope. - Working out a procedure. 346 00:34:58,157 --> 00:35:02,833 It's a mammoth task writing new code. The recalibration alone could take... 347 00:35:02,997 --> 00:35:06,194 Longer than a year? 348 00:35:06,357 --> 00:35:07,949 Well... 349 00:35:10,277 --> 00:35:16,113 (NINA) Incubating algae on Mars sample 217 at 16 degrees, humidity 24%. 350 00:35:16,277 --> 00:35:19,155 (NARRATOR) Sulman will use her limited resources 351 00:35:19,317 --> 00:35:22,707 to try and activate any microbes inside the Martian soil. 352 00:35:22,877 --> 00:35:26,472 Algal bloom on Martian soil. 353 00:35:26,637 --> 00:35:32,633 I haven't phoned it in yet. I want to enjoy it a bit longer before they rain on my parade. 354 00:35:35,437 --> 00:35:39,271 It's brown-green in colour and just a few micros thick. 355 00:35:39,437 --> 00:35:44,431 Either it was dormant within the soil when it was on Mars and we've nurtured it into life 356 00:35:44,597 --> 00:35:47,157 or it's a contaminant from Pegasus. 357 00:35:48,037 --> 00:35:50,597 We'll just have to be patient. 358 00:35:56,557 --> 00:35:58,354 (NARRATOR) It'll be a year and a half 359 00:35:58,517 --> 00:36:01,668 before Pegasus reaches the furthest planet from the sun. 360 00:36:01,837 --> 00:36:06,786 This is now a voyage into the unknown. No probe has visited Pluto. 361 00:36:08,037 --> 00:36:10,835 It has only ever been seen by telescope. 362 00:36:12,957 --> 00:36:17,667 People always ask me whether or not Pluto's worth three years, and, er... 363 00:36:19,837 --> 00:36:22,271 ..I'll tell you when I get there. 364 00:36:27,357 --> 00:36:32,351 After two gruelling years of space flight, maintenance becomes ever more vital. 365 00:36:32,517 --> 00:36:36,226 (YVAN) I wouldn't like to try another aerobrake with this shield. 366 00:36:36,397 --> 00:36:40,356 (TOM) We've got impacts on the cooling ducts. Looks like ring dust. 367 00:36:41,157 --> 00:36:43,387 (NARRATOR) They will also redesign a telescope 368 00:36:43,557 --> 00:36:46,390 to search for planets outside our solar system. 369 00:36:51,637 --> 00:36:55,027 The crew will cross the orbits of two more distant planets, 370 00:36:55,197 --> 00:36:58,587 but these they will not have the opportunity to visit. 371 00:37:01,037 --> 00:37:04,234 Neptune, Uranus - fascinating gas giants in their own right, 372 00:37:04,397 --> 00:37:09,471 but they're in the wrong part of the solar system for this voyage. Six years is enough. 373 00:37:10,477 --> 00:37:13,275 (NARRATOR) And for some, six years is too long. 374 00:37:14,797 --> 00:37:17,516 (ALL) # ..which nobody can deny 375 00:37:17,677 --> 00:37:22,467 # For he's a jolly good fellow 376 00:37:22,637 --> 00:37:25,834 # And so say all of us # 377 00:37:25,997 --> 00:37:29,194 (APPLAUSE AND CHEERING) 378 00:37:30,557 --> 00:37:33,708 It's been a real privilege working with you guys 379 00:37:33,877 --> 00:37:40,191 and everyone here and...outside this room who've helped put you up there. 380 00:37:40,997 --> 00:37:46,469 Um...I know they'll give Larry the same 110% they always gave me. 381 00:37:47,757 --> 00:37:51,830 He's, er... Well, he's been your Capcom for the past three years, so... 382 00:37:51,997 --> 00:37:54,591 ..you know you're in safe hands. 383 00:38:12,597 --> 00:38:16,385 (LARRY) Pegasus, this is Control. Waking you up an hour early today... 384 00:38:16,557 --> 00:38:19,754 (V0ICE FADES AND BEC0MES INAUDIBLE) 385 00:38:46,117 --> 00:38:48,392 (INAUDIBLE C0NVERSATI0N) 386 00:38:52,797 --> 00:38:58,508 I feel like I'm falling down a well... but in a good way. 387 00:38:59,037 --> 00:39:03,428 (NARRATOR) Travelling to the edge of the solar system is like travelling back in time. 388 00:39:03,597 --> 00:39:07,715 Pluto is a frozen relic from when the planets first formed. 389 00:39:07,877 --> 00:39:10,869 They're entering the prehistoric solar system. 390 00:39:11,037 --> 00:39:16,031 They've gone back four-and-a-half billion years. The birth of the solar system. 391 00:39:17,597 --> 00:39:19,588 I wish I was there. 392 00:39:35,117 --> 00:39:39,429 (YVAN) Final burn time, eight minutes. Delta V, minus 16. 393 00:39:39,597 --> 00:39:42,987 Pitch 102, yaw 256. 394 00:39:45,917 --> 00:39:48,636 Fuel, 89.25. 395 00:39:48,797 --> 00:39:50,788 Fuel burn in 10. 396 00:39:51,797 --> 00:39:55,995 (ZOË) Copy that. And be advised there will be no gyro bias updates. 397 00:39:56,877 --> 00:39:58,674 (YVAN) Roger that. 398 00:40:00,917 --> 00:40:03,750 (TOM) Welcome to the edge of the solar system. 399 00:40:03,917 --> 00:40:07,114 It's a balmy summer's day here on Pluto. 400 00:40:07,957 --> 00:40:11,154 233 degrees below zero. 401 00:40:11,837 --> 00:40:13,828 Despite the insulation, 402 00:40:13,997 --> 00:40:18,627 I can already feel the cold working its way through my boots. 403 00:40:19,637 --> 00:40:24,836 That's our sun. From here, it's only 100 times as bright as a full moon on Earth. 404 00:40:26,437 --> 00:40:29,429 Hard to believe it killed one of our crew. 405 00:40:32,357 --> 00:40:37,715 This is our moon. Eight times bigger in the sky than yours and it's in a locked orbit. 406 00:40:37,877 --> 00:40:40,835 It's like someone just nailed it there. 407 00:40:44,757 --> 00:40:49,785 Feels like time's just stopped here... like walking around in a tomb. 408 00:40:52,077 --> 00:40:55,467 The last planet Yvan walked on was three years ago. 409 00:40:55,637 --> 00:40:59,346 That was Venus, where he nearly fried! 410 00:40:59,517 --> 00:41:03,669 Hot, cold, hot, cold. Someone make their mind up! 411 00:41:04,957 --> 00:41:08,870 (NARRATOR) Even on the dead world of Pluto, the search for life continues. 412 00:41:09,677 --> 00:41:11,872 But not in our solar system. 413 00:41:13,437 --> 00:41:18,750 The crew have redesigned this telescope to search for distant Earth-like planets. 414 00:41:21,037 --> 00:41:26,430 In order to detect the faint heat glow of a planet, the telescope has to be very cold. 415 00:41:28,797 --> 00:41:31,516 Pluto is the perfect vantage point. 416 00:41:31,677 --> 00:41:35,352 (T0M) Er...mirror's out. 0ther way. Yeah, you got it. 417 00:41:38,717 --> 00:41:42,915 (NINA) I've got you. (YVAN) Can you see us yet? Mirror's exposed. 418 00:41:44,757 --> 00:41:49,467 Scope's powered up, the spectrometer's chilled. We're just waiting for Pluto to come round more. 419 00:41:56,197 --> 00:42:00,554 (ZOË) Telescope's lowering to Earth coordinates. Locked on. 420 00:42:00,717 --> 00:42:03,106 Acquiring image. 421 00:42:08,917 --> 00:42:13,354 I can make out cloud structures and the surface is predominantly blue. 422 00:42:13,517 --> 00:42:16,236 There's an ozone layer so there must be an atmosphere 423 00:42:16,397 --> 00:42:22,870 with a considerable amount of oxygen... water, too, but is there life? 424 00:42:23,037 --> 00:42:27,349 Could be contamination. Certainly nothing intelligentI 425 00:42:46,477 --> 00:42:50,755 ''We commend the commitment of all those brave souls... 426 00:42:52,197 --> 00:42:55,234 ..who gave their lives to the exploration of space.'' 427 00:42:59,677 --> 00:43:01,668 (TOM) Yvan? 428 00:43:03,237 --> 00:43:07,230 (YVAN) John Pearson was due to make this landing with us. 429 00:43:09,877 --> 00:43:15,474 He wanted to say this from the Russian space pioneer Konstanin Tsiolkovsky. 430 00:43:18,997 --> 00:43:22,148 (SPEAKS RUSSIAN) 431 00:43:53,197 --> 00:43:57,395 (CLAIRE) It's a different mind-set on the way back. It's easy to take your eye off the ball. 432 00:43:57,557 --> 00:44:02,028 We have to remember how lucky we've been not to have lost more than one. 433 00:44:03,197 --> 00:44:07,190 (NARRATOR) The launch from Pluto marks the end of their planetary exploration, 434 00:44:07,357 --> 00:44:09,348 but not the end of the mission. 435 00:44:09,517 --> 00:44:13,305 On the three-year voyage home, they will have one final rendezvous 436 00:44:13,477 --> 00:44:17,675 with the most spectacular phenomenon in the solar system - a comet. 437 00:44:17,837 --> 00:44:20,988 (LL0YD ) Most comets come from a region beyond Pluto - the 0ort Cloud. 438 00:44:21,157 --> 00:44:24,752 The ice has been blackened by billions of years of solar radiation. 439 00:44:24,917 --> 00:44:28,626 When they fall in towards the sun, they heat up and the tail forms. 440 00:44:28,797 --> 00:44:32,756 They've got a Jekyll and Hyde personality. Far from the sun, they're docile. 441 00:44:32,917 --> 00:44:38,833 0nce they come in past Jupiter's orbit, they can break up without warning, which can be beautiful. 442 00:44:38,997 --> 00:44:41,795 They're blacker than coal, partly the radiation. 443 00:44:41,957 --> 00:44:46,792 There's also organic molecules like formaldehyde and they've got a lot of water. 444 00:44:46,957 --> 00:44:52,395 Comets carry all the building blocks for life. They may even have brought life to Earth. 445 00:45:03,957 --> 00:45:08,030 - It's spooky. It's so... - (Z0Ë) Black. 446 00:45:09,717 --> 00:45:11,514 (NINA) Darker. 447 00:45:13,637 --> 00:45:17,232 0ne more rock to land on, but as far as I'm concerned, 448 00:45:17,397 --> 00:45:22,027 there's only one mission objective left and that's to get everybody home. 449 00:45:39,237 --> 00:45:41,068 It's fast asleep. 450 00:45:41,837 --> 00:45:46,149 No coma to speak of and no tail. It's a good time to go in. 451 00:45:46,317 --> 00:45:50,310 I never thought Tom would let me command another mission after Io. 452 00:45:51,837 --> 00:45:54,829 But it turns out Io wasn't my fault. 453 00:45:57,797 --> 00:46:00,186 (YVAN SPEAKS RUSSIAN) 454 00:46:14,917 --> 00:46:18,705 So they're unpredictable. That's the whole point. 455 00:46:18,877 --> 00:46:22,347 That's the difference between engineers and scientists. 456 00:46:22,517 --> 00:46:26,510 Engineers hate surprises. We love 'em. 457 00:46:33,957 --> 00:46:37,347 Separation, Zoë. We're out at 50 metres per second. 458 00:46:38,277 --> 00:46:40,666 - Get ready for ignition. - APU's looking good. 459 00:46:40,837 --> 00:46:43,032 (Z0Ë) Altitude is good. 460 00:46:48,037 --> 00:46:53,873 Stand by for burn. Three, two, one, ignition. 461 00:46:54,797 --> 00:46:57,516 (Z0Ë) 0n our way back. (NINA) 3cm per second. 462 00:46:57,677 --> 00:46:59,747 Remember the margins. 463 00:47:09,317 --> 00:47:13,230 - Contact? - 1.5 metres. I'm shutting it down, letting it drift. 464 00:47:13,397 --> 00:47:17,709 (NINA) Lot of dust. I can't see a thing. (Z0Ë) Firing off the harpoons. 465 00:47:17,877 --> 00:47:19,595 (NINA) Capture. 466 00:47:21,117 --> 00:47:23,551 - They've set off a tremor. - That rock is fragile. 467 00:47:24,317 --> 00:47:26,353 (NINA) Two metres... 468 00:47:27,277 --> 00:47:30,474 - One metre. - (ZOË) Messier is down. 469 00:47:30,637 --> 00:47:35,074 Pegasus, we're on the surface. Five pads down. Looking for a stay at 2-1. 470 00:47:35,237 --> 00:47:39,549 - Residuals? - Slightly down, but we're on the surface. 471 00:47:39,717 --> 00:47:43,505 It's quite incredible. It looks sculpted. 472 00:47:43,677 --> 00:47:48,034 (TOM) We're monitoring a little activity. (Z0Ë) I can see a glow in the sky. 473 00:47:48,197 --> 00:47:51,189 That'll be the first sign of the coma. 474 00:47:54,997 --> 00:47:58,990 (LL0YD ) As it comes into the sun and heats up, it'll start shedding material, 475 00:47:59,157 --> 00:48:03,355 which becomes a cloud, the coma, hundreds of thousands of miles across. 476 00:48:03,517 --> 00:48:09,274 But the nucleus can be heated from inside, too, and gases build up like a pressure cooker. 477 00:48:09,437 --> 00:48:13,476 - (MAN) So it could explode? - Do we really have to hype everything? 478 00:48:14,757 --> 00:48:19,990 (Z0Ë) We're about one metre from the surface. Just coming over a level portion now. 479 00:48:24,277 --> 00:48:29,874 In fact, I think I can just about... There. Can't not leave a footprint. 480 00:48:32,437 --> 00:48:36,032 (NINA) Pegasus, do we have a go for the crevice? 481 00:48:36,197 --> 00:48:39,428 (YVAN) Just taking a last look at seismic activity. 482 00:48:39,597 --> 00:48:44,273 (Z0Ë) I've been on the most volcanic object in the solar system. Give me a break. 483 00:48:45,477 --> 00:48:48,196 Tremors have increased in the last few hours. 484 00:48:48,357 --> 00:48:54,353 The coma's rising, but I'm more worried about the dust. 10 to 15 tons a second at last count. 485 00:49:24,637 --> 00:49:26,434 (Z0Ë) I'm going in. 486 00:49:31,597 --> 00:49:35,033 (NINA) Take care. See you in a minute. 487 00:49:46,597 --> 00:49:49,065 Capcom, patch me through to Pegasus. 488 00:49:49,237 --> 00:49:52,593 (YVAN) Tom, stronger tremors now. What can you see? 489 00:49:52,757 --> 00:49:58,115 (TOM) Frequency's going up. Just a second. (YVAN) I think we should pull them out. Tom? 490 00:49:58,277 --> 00:50:00,745 (T0M) Give me a second, will you? 491 00:50:00,917 --> 00:50:05,991 (ZOË) Solar radiation hasn't reached down here. This is where we'll get the purer samples. 492 00:50:06,157 --> 00:50:08,796 - It's a goldmineI - (RUMBLING) 493 00:50:08,957 --> 00:50:12,427 - What the hell was that?I - (RUMBLING INCREASES) 494 00:50:16,997 --> 00:50:20,546 - (Z0Ë) Pegasus, is it a problem? - It is. Get going now! 495 00:50:20,717 --> 00:50:25,029 - (Z0Ë AND NINA) Copy. - We don't like the reading on seismic activity. 496 00:50:25,197 --> 00:50:29,907 (EVERY0NE TALKS AT 0NCE) 497 00:50:32,197 --> 00:50:37,829 Roger that, Tom. We're sending our main coordinates. Guidance system's nominal. 498 00:50:38,837 --> 00:50:43,149 - Activity outside? - Visibility decreasing. There's a lot of debris. 499 00:50:43,317 --> 00:50:47,105 - 0K, set stage ignition and mark. - (BABBLE 0F V0ICES) 500 00:50:47,277 --> 00:50:53,147 (Z0Ë) Releasing tethers in three, two, one, mark. 501 00:50:53,317 --> 00:50:56,036 Light's on, but we still seem to be attached. 502 00:50:56,197 --> 00:50:59,872 (ZOË) We're going for a second release. Three, two, one, mark. 503 00:51:01,917 --> 00:51:03,987 - We're moving. - Lift-off. 504 00:51:04,157 --> 00:51:07,991 (NINA) Gone up to 20, 25, 30. 505 00:51:08,157 --> 00:51:12,787 The sun shield sounds like it's taken a few hits, but we're 0K, looking good. 506 00:51:20,557 --> 00:51:22,866 (T0M) Messier, Pegasus? 507 00:51:24,557 --> 00:51:27,025 Zoë, do you copy? 508 00:51:29,277 --> 00:51:31,711 Nina, do you copy? 509 00:51:33,997 --> 00:51:35,988 Messier, do you copy? 510 00:51:38,837 --> 00:51:42,034 (ZOË) Reading you. Get your shield round. You've got incoming. 511 00:51:42,197 --> 00:51:48,306 (NINA) The nucleus exploded. High-velocity debris heading for you. Turn the ship round. 512 00:51:48,477 --> 00:51:52,265 - (ZOË) Pegasus? - Hang on, we got a problem here. 513 00:51:52,437 --> 00:51:55,349 - (METALLIC CRASHING) - (TOM) Yvan? 514 00:52:17,477 --> 00:52:21,072 (ZOË) Pegasus, we're low on O2. Do you copy? 515 00:52:22,717 --> 00:52:24,867 Two o'clock. 516 00:52:32,957 --> 00:52:37,155 (ZOË) OK, forward. Go. We've got about 60 seconds clear. 517 00:52:42,037 --> 00:52:46,030 (NINA) This is suicide. (Z0Ë) Do you want to stay and suffocate? 518 00:52:49,157 --> 00:52:51,625 (NINA) There's someone in there. 519 00:52:52,717 --> 00:52:54,912 (Z0Ë) It's Tom. (NINA) Where's Yvan? 520 00:52:58,197 --> 00:53:00,586 We have to get to the airlock. 521 00:53:00,757 --> 00:53:03,669 (BUZZ 0F C0NVERSATI0N) 522 00:53:14,837 --> 00:53:19,831 Um...they're not out of danger. The comet still poses a threat to everyone. 523 00:53:19,997 --> 00:53:24,787 - We're taking control of Pegasus... - You wanna get your priorities straight. 524 00:53:24,957 --> 00:53:27,551 - Go outside. - I thought you let them in. 525 00:53:41,357 --> 00:53:44,190 (FRAGMENTS CRASH INT0 SPACECRAFT) 526 00:53:52,717 --> 00:53:57,507 The comet fragment punctured his right lung. Fluid's been building up in his pleural cavity. 527 00:53:57,677 --> 00:54:03,673 We have to make an incision between the ribs, an emergency... Sorry, I don't have time for this. 528 00:54:19,397 --> 00:54:23,436 (NINA) This is going to hurt a bit. Number four scalpel. 529 00:54:26,117 --> 00:54:28,108 Try to keep still. 530 00:54:29,797 --> 00:54:33,187 - I have to feel between your ribs now. - (C0UGHS) 531 00:54:37,837 --> 00:54:40,226 Chest drain. 532 00:54:40,397 --> 00:54:43,309 (IMPACTS 0N SHIP C0NTINUE) 533 00:55:05,917 --> 00:55:09,068 (T0M) The cockpit is online. We have navigation. 534 00:55:12,117 --> 00:55:15,712 - (YVAN) How is she? - (NINA) Pegasus is fine. 535 00:55:15,877 --> 00:55:17,868 You're a wreck! 536 00:55:20,917 --> 00:55:24,114 (NARRATOR) After three weeks tending Grigorev and Pegasus, 537 00:55:24,277 --> 00:55:30,466 both patients are ready to leave the comet for the final leg of the grand tour...and Earth. 538 00:55:46,757 --> 00:55:50,227 (CLAIRE) No more landings, no more pushing the boundaries. 539 00:55:50,397 --> 00:55:56,506 They have a lot of science left to do, but safely, on board Pegasus. They're coming home. 540 00:56:24,357 --> 00:56:28,350 (CLAIRE) We've learnt as much about the human body as the planets. 541 00:56:28,517 --> 00:56:32,829 I think the toughest part is still to come - adapting to life on Earth, 542 00:56:32,997 --> 00:56:35,306 full gravity, day after day after day. 543 00:56:36,877 --> 00:56:40,586 (LL0YD ) I hope it puts the debate between humans and machines to bed. 544 00:56:40,757 --> 00:56:46,468 We couldn't have done it alone and we could've done it years ago. What took us so long? 545 00:56:55,757 --> 00:57:00,148 (NARRATOR) The spirit of exploration is at the heart of human nature. 546 00:57:00,317 --> 00:57:05,266 Whatever the risks, we will always reach out in the hope of discovering new worlds 547 00:57:05,437 --> 00:57:10,909 and new life, even if only to truly appreciate our own.