1 00:00:14,870 --> 00:00:32,709 [Music] 2 00:00:36,389 --> 00:00:34,470 when i was a little girl 3 00:00:38,470 --> 00:00:36,399 i remember standing in my yard almost 4 00:00:42,389 --> 00:00:38,480 every night staring into the sky at a 5 00:00:45,510 --> 00:00:43,590 i thought about what i learned in 6 00:00:48,470 --> 00:00:45,520 science class about the robots that 7 00:00:50,069 --> 00:00:48,480 humans sent to study and explore mars 8 00:00:51,910 --> 00:00:50,079 they were pretty limited in how far they 9 00:00:53,430 --> 00:00:51,920 could travel along its surface 10 00:00:56,310 --> 00:00:53,440 but the information they sent back 11 00:00:58,470 --> 00:00:56,320 transformed that red dot into an entire 12 00:01:00,389 --> 00:00:58,480 world 13 00:01:02,470 --> 00:01:00,399 they revealed evidence of water on mars 14 00:01:03,750 --> 00:01:02,480 from long ago and found organic 15 00:01:05,910 --> 00:01:03,760 compounds 16 00:01:07,590 --> 00:01:05,920 the chemical building blocks of life 17 00:01:11,350 --> 00:01:07,600 which suggested that it had possibly 18 00:01:13,109 --> 00:01:11,360 once been the home of tiny creatures 19 00:01:15,109 --> 00:01:13,119 the most recent robot they sent in the 20 00:01:17,590 --> 00:01:15,119 2020s continued in the search for 21 00:01:19,990 --> 00:01:17,600 evidence of past life on mars 22 00:01:21,910 --> 00:01:20,000 but it also had another goal 23 00:01:24,580 --> 00:01:21,920 to help pave the way for the first 24 00:01:25,749 --> 00:01:24,590 generation of humans to land on mars 25 00:01:38,710 --> 00:01:25,759 [Music] 26 00:01:42,870 --> 00:01:41,190 as we approach mars the idea of landing 27 00:01:45,030 --> 00:01:42,880 on its surface still feels like a 28 00:01:46,630 --> 00:01:45,040 distant dream 29 00:01:48,389 --> 00:01:46,640 the orbits of earth and mars around the 30 00:01:50,469 --> 00:01:48,399 sun allow for a trek to the planet about 31 00:01:52,230 --> 00:01:50,479 every 26 months or so 32 00:01:55,350 --> 00:01:52,240 which means round-trip missions can take 33 00:01:57,030 --> 00:01:55,360 anywhere from one to three years 34 00:01:58,789 --> 00:01:57,040 for this mission we will arrive back to 35 00:02:00,469 --> 00:01:58,799 earth just after a year and a half from 36 00:02:02,230 --> 00:02:00,479 launch 37 00:02:04,789 --> 00:02:02,240 it's surreal to know we will be the 38 00:02:06,469 --> 00:02:04,799 first humans to arrive to this world 39 00:02:08,630 --> 00:02:06,479 and that we will lay the foundation for 40 00:02:10,389 --> 00:02:08,640 future explorers 41 00:02:12,020 --> 00:02:10,399 a few of us might even return back to 42 00:02:13,430 --> 00:02:12,030 mars 43 00:02:14,869 --> 00:02:13,440 [Music] 44 00:02:16,229 --> 00:02:14,879 i've never really liked the colonial 45 00:02:19,190 --> 00:02:16,239 language that often clutters 46 00:02:21,510 --> 00:02:19,200 conversations about space exploration 47 00:02:23,190 --> 00:02:21,520 this is not manifest destiny 48 00:02:25,910 --> 00:02:23,200 this is the universe 49 00:02:29,110 --> 00:02:25,920 stretching its limbs a little further 50 00:02:31,110 --> 00:02:29,120 we are knocking on our neighbor's door 51 00:02:33,910 --> 00:02:31,120 one of the biggest questions is 52 00:02:35,910 --> 00:02:33,920 if there will be anyone there to answer 53 00:02:37,509 --> 00:02:35,920 the atmosphere of mars is 100 times 54 00:02:40,070 --> 00:02:37,519 thinner than earth's 55 00:02:41,830 --> 00:02:40,080 what's left of that atmosphere is 95 56 00:02:43,589 --> 00:02:41,840 carbon dioxide 57 00:02:47,990 --> 00:02:43,599 the average temperature of the planet is 58 00:02:50,630 --> 00:02:48,000 a frigid negative 55 degrees celsius 59 00:02:52,550 --> 00:02:50,640 if i let my imagination run wild 60 00:02:54,949 --> 00:02:52,560 i can dream of encountering ancient 61 00:02:56,710 --> 00:02:54,959 fossils from another epic that offers a 62 00:02:59,670 --> 00:02:56,720 glimpse into what life was like on mars 63 00:03:02,070 --> 00:02:59,680 when the lakes and rivers were abundant 64 00:03:03,750 --> 00:03:02,080 if life does exist on mars today it's 65 00:03:06,149 --> 00:03:03,760 likely in the form of microbes that the 66 00:03:08,309 --> 00:03:06,159 previous missions have suggested 67 00:03:10,949 --> 00:03:08,319 tiny martians scattered across the clay 68 00:03:12,949 --> 00:03:10,959 and soil on its surface 69 00:03:14,790 --> 00:03:12,959 if we do discover life 70 00:03:17,589 --> 00:03:14,800 we will know that the red point of light 71 00:03:19,350 --> 00:03:17,599 in our sky is living 72 00:03:21,589 --> 00:03:19,360 how many other points of light might 73 00:03:23,910 --> 00:03:21,599 illuminate a kaleidoscope of life hidden 74 00:03:26,149 --> 00:03:23,920 in the sky 75 00:03:27,910 --> 00:03:26,159 if there's life on mars 76 00:03:30,229 --> 00:03:27,920 i believe we should do nothing to 77 00:03:32,390 --> 00:03:30,239 disturb that life 78 00:03:34,470 --> 00:03:32,400 but if we arrive at a barren world 79 00:03:35,750 --> 00:03:34,480 we ourselves might learn to become its 80 00:03:38,229 --> 00:03:35,760 creatures 81 00:03:40,550 --> 00:03:38,239 slowly breathing life into the planet 82 00:03:42,550 --> 00:03:40,560 until that breath becomes its very 83 00:03:44,149 --> 00:03:42,560 atmosphere 84 00:03:47,270 --> 00:03:44,159 what we have learned from the harm we've 85 00:03:49,589 --> 00:03:47,280 caused the earth 86 00:03:52,309 --> 00:03:49,599 sometime soon i will find myself in a 87 00:03:55,030 --> 00:03:52,319 strange position 88 00:03:57,110 --> 00:03:55,040 i will look into the night sky but 89 00:03:58,830 --> 00:03:57,120 that red point of light that i love so 90 00:04:01,429 --> 00:03:58,840 much will have 91 00:04:03,270 --> 00:04:01,439 vanished instead 92 00:04:04,470 --> 00:04:03,280 a blue point of light will glimmer above 93 00:04:06,789 --> 00:04:04,480 me 94 00:04:10,229 --> 00:04:06,799 delicately suspended among countless 95 00:04:12,120 --> 00:04:11,670 and as i look at that blue point of 96 00:04:13,270 --> 00:04:12,130 light 97 00:04:15,429 --> 00:04:13,280 [Music] 98 00:04:18,710 --> 00:04:15,439 i will be looking at the home of every 99 00:04:21,110 --> 00:04:18,720 human being in the universe 100 00:04:23,830 --> 00:04:21,120 and i will hope that someone 101 00:04:25,749 --> 00:04:23,840 perhaps even a few people 102 00:04:29,030 --> 00:04:25,759 will be looking up at that red point of 103 00:04:31,270 --> 00:04:29,040 light in their sky 104 00:04:33,510 --> 00:04:31,280 and in that moment 105 00:04:35,270 --> 00:04:33,520 we will see each other across the solar 106 00:04:37,430 --> 00:04:35,280 system 107 00:04:48,820 --> 00:04:37,440 and i will say