[Script Info]
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[Events]
Format: Layer, Start, End, Style, Name, MarginL, MarginR, MarginV, Effect, Text
Dialogue: 0,0:00:07.20,0:00:12.48,Default,,0000,0000,0000,,Astronomers have discovered thousands of\Nplanets orbiting stars other than the Sun.
Dialogue: 0,0:00:12.48,0:00:14.18,Default,,0000,0000,0000,,They come in all sizes,
Dialogue: 0,0:00:14.18,0:00:16.99,Default,,0000,0000,0000,,at different orbital distances \Nfrom their stars.
Dialogue: 0,0:00:16.99,0:00:20.14,Default,,0000,0000,0000,,The closest of them are trillions\Nof miles away,
Dialogue: 0,0:00:20.14,0:00:22.81,Default,,0000,0000,0000,,and even the largest \Nare just fuzzy patches
Dialogue: 0,0:00:22.81,0:00:25.75,Default,,0000,0000,0000,,in the fields of high-powered telescopes.
Dialogue: 0,0:00:25.75,0:00:28.98,Default,,0000,0000,0000,,But if one of these planets is close\Nin size to the Earth
Dialogue: 0,0:00:28.98,0:00:33.85,Default,,0000,0000,0000,,and orbits not too close\Nand too far away from its parent star,
Dialogue: 0,0:00:33.85,0:00:37.25,Default,,0000,0000,0000,,it could be rocky and warm enough\Nto have oceans
Dialogue: 0,0:00:37.25,0:00:39.64,Default,,0000,0000,0000,,and perhaps life.
Dialogue: 0,0:00:39.64,0:00:42.90,Default,,0000,0000,0000,,Astronomers discover these potentially\Nhabitable planets,
Dialogue: 0,0:00:42.90,0:00:45.55,Default,,0000,0000,0000,,and their eyes get big and wide.
Dialogue: 0,0:00:45.55,0:00:49.51,Default,,0000,0000,0000,,Could one of these distant worlds\Ncarry the building blocks of life?
Dialogue: 0,0:00:49.51,0:00:52.92,Default,,0000,0000,0000,,Or even a living, breathing, civilization?
Dialogue: 0,0:00:52.92,0:00:57.93,Default,,0000,0000,0000,,Is the question, "Are we alone\Nin the universe?" about to be answered?
Dialogue: 0,0:00:57.93,0:00:59.04,Default,,0000,0000,0000,,But wait.
Dialogue: 0,0:00:59.04,0:01:02.58,Default,,0000,0000,0000,,Maybe we should \Nask a different question first.
Dialogue: 0,0:01:02.58,0:01:06.25,Default,,0000,0000,0000,,Should we try to find out \Nif we're alone in the universe?
Dialogue: 0,0:01:06.25,0:01:08.75,Default,,0000,0000,0000,,If we do find the atmospheric \Nfingerprints of life
Dialogue: 0,0:01:08.75,0:01:11.73,Default,,0000,0000,0000,,on one of these small,\Ndistant worlds,
Dialogue: 0,0:01:11.73,0:01:15.15,Default,,0000,0000,0000,,should we try to contact any beings\Nwho may live there?
Dialogue: 0,0:01:15.15,0:01:17.12,Default,,0000,0000,0000,,Is that wise?
Dialogue: 0,0:01:17.12,0:01:21.16,Default,,0000,0000,0000,,Three decades ago, NASA decided\Nthe answer was yes.
Dialogue: 0,0:01:21.16,0:01:24.67,Default,,0000,0000,0000,,Voyager 1 and 2 were launched in 1977
Dialogue: 0,0:01:24.67,0:01:27.76,Default,,0000,0000,0000,,to explore the giant planets \Nin the solar system.
Dialogue: 0,0:01:27.76,0:01:31.56,Default,,0000,0000,0000,,Each spacecraft carried a golden\Nphonograph record,
Dialogue: 0,0:01:31.56,0:01:35.38,Default,,0000,0000,0000,,a time capsule of sorts that included\Nclues and messages
Dialogue: 0,0:01:35.38,0:01:38.92,Default,,0000,0000,0000,,meant to convey the story\Nof human civilization.
Dialogue: 0,0:01:38.92,0:01:43.39,Default,,0000,0000,0000,,The contents of these gold-plated\Ncopper disks were chosen by a committee
Dialogue: 0,0:01:43.39,0:01:47.16,Default,,0000,0000,0000,,chaired by American astronomer\Nand author Carl Sagan.
Dialogue: 0,0:01:47.16,0:01:49.32,Default,,0000,0000,0000,,They included over 100 images,
Dialogue: 0,0:01:49.32,0:01:51.68,Default,,0000,0000,0000,,and a range of sounds \Nfrom the natural world:
Dialogue: 0,0:01:51.68,0:01:53.21,Default,,0000,0000,0000,,ocean waves,
Dialogue: 0,0:01:53.21,0:01:54.12,Default,,0000,0000,0000,,thunder,
Dialogue: 0,0:01:54.12,0:01:55.27,Default,,0000,0000,0000,,the sounds of birds
Dialogue: 0,0:01:55.27,0:01:56.66,Default,,0000,0000,0000,,and whales.
Dialogue: 0,0:01:56.66,0:02:00.65,Default,,0000,0000,0000,,The records also included music from\Nmany different time periods and cultures,
Dialogue: 0,0:02:00.65,0:02:02.88,Default,,0000,0000,0000,,greetings in 55 languages,
Dialogue: 0,0:02:02.88,0:02:05.64,Default,,0000,0000,0000,,and messages from \Nthe President of the United States,
Dialogue: 0,0:02:05.64,0:02:08.40,Default,,0000,0000,0000,,and the UN Secretary General.
Dialogue: 0,0:02:08.40,0:02:10.96,Default,,0000,0000,0000,,They also included a map.
Dialogue: 0,0:02:10.96,0:02:14.85,Default,,0000,0000,0000,,Each golden record displays the location\Nof our solar system
Dialogue: 0,0:02:14.85,0:02:17.47,Default,,0000,0000,0000,,with respect to fourteen pulsars.
Dialogue: 0,0:02:17.47,0:02:20.13,Default,,0000,0000,0000,,Their precise, unique frequencies\Nwere indicated
Dialogue: 0,0:02:20.13,0:02:23.38,Default,,0000,0000,0000,,so that intelligent,\Nextraterrestrial lifeforms
Dialogue: 0,0:02:23.38,0:02:26.45,Default,,0000,0000,0000,,could use them to find the Earth.
Dialogue: 0,0:02:26.45,0:02:29.70,Default,,0000,0000,0000,,Many years later, renowned physicist\NStephen Hawking said
Dialogue: 0,0:02:29.70,0:02:34.44,Default,,0000,0000,0000,,that it was a mistake to give\Nan alien species a roadmap to our planet.
Dialogue: 0,0:02:34.44,0:02:37.52,Default,,0000,0000,0000,,Hawking suspected that any \Nextraterrestrial life
Dialogue: 0,0:02:37.52,0:02:40.80,Default,,0000,0000,0000,,probably wasn't any more complex\Nthan microbes,
Dialogue: 0,0:02:40.80,0:02:44.89,Default,,0000,0000,0000,,but he warned that if an advanced\Nalien species did visit Earth,
Dialogue: 0,0:02:44.89,0:02:48.82,Default,,0000,0000,0000,,it could be as catastrophic as\NChristopher Columbus's arrival was
Dialogue: 0,0:02:48.82,0:02:51.05,Default,,0000,0000,0000,,for the Native Americans.
Dialogue: 0,0:02:51.05,0:02:54.46,Default,,0000,0000,0000,,Meanwhile, the golden records\Ncontinue their journeys.
Dialogue: 0,0:02:54.46,0:03:00.11,Default,,0000,0000,0000,,In 1990, both Voyager spacecraft\Npassed beyond the orbit of Pluto.
Dialogue: 0,0:03:00.11,0:03:04.36,Default,,0000,0000,0000,,Voyager 1 entered interstellar space\Nin 2012,
Dialogue: 0,0:03:04.36,0:03:08.36,Default,,0000,0000,0000,,and will reach the nearest stellar system\Nin 40,000 years.
Dialogue: 0,0:03:08.36,0:03:11.60,Default,,0000,0000,0000,,If either spacecraft is discovered\Nby extraterrestrial life,
Dialogue: 0,0:03:11.60,0:03:15.72,Default,,0000,0000,0000,,there's a possibility that they could\Ndecipher the clues from the golden record
Dialogue: 0,0:03:15.72,0:03:18.39,Default,,0000,0000,0000,,and one day reach our planet.
Dialogue: 0,0:03:18.39,0:03:19.55,Default,,0000,0000,0000,,That's particularly true
Dialogue: 0,0:03:19.55,0:03:23.87,Default,,0000,0000,0000,,if theirs is a much more \Ntechnologically advanced civilization.
Dialogue: 0,0:03:23.87,0:03:25.95,Default,,0000,0000,0000,,That life could be benevolent,
Dialogue: 0,0:03:25.95,0:03:30.71,Default,,0000,0000,0000,,as we would hope to be if humans are one\Nday able to achieve interstellar travel.
Dialogue: 0,0:03:30.71,0:03:32.47,Default,,0000,0000,0000,,Or it could be hostile.
Dialogue: 0,0:03:32.47,0:03:38.11,Default,,0000,0000,0000,,Searching for planets that might have life\Nmeans staring into a great abyss.
Dialogue: 0,0:03:38.11,0:03:41.22,Default,,0000,0000,0000,,We'll likely have no clear knowledge\Nof the evolutionary stage,
Dialogue: 0,0:03:41.22,0:03:43.00,Default,,0000,0000,0000,,sentience,
Dialogue: 0,0:03:43.00,0:03:43.94,Default,,0000,0000,0000,,character,
Dialogue: 0,0:03:43.94,0:03:47.28,Default,,0000,0000,0000,,or intentions of the first form of life\Nwe discover.
Dialogue: 0,0:03:47.28,0:03:49.93,Default,,0000,0000,0000,,So it's a risk to turn our eyes outwards.
Dialogue: 0,0:03:49.93,0:03:52.24,Default,,0000,0000,0000,,We risk our very way of life.
Dialogue: 0,0:03:52.24,0:03:55.64,Default,,0000,0000,0000,,But it may be a greater risk not to look,
Dialogue: 0,0:03:55.64,0:04:01.03,Default,,0000,0000,0000,,to deny the very pioneering spirits\Nthat help shape our own species.
Dialogue: 0,0:04:01.03,0:04:04.25,Default,,0000,0000,0000,,We are all born curious about the world\Nand the universe.
Dialogue: 0,0:04:04.25,0:04:09.25,Default,,0000,0000,0000,,Pursuing that curiosity is one of\Nhumankind's greatest achievements.
Dialogue: 0,0:04:09.25,0:04:11.91,Default,,0000,0000,0000,,Perhaps there is room to push \Nthe frontiers of science,
Dialogue: 0,0:04:11.91,0:04:15.03,Default,,0000,0000,0000,,provided that we cradle alongside \Nour fervor
Dialogue: 0,0:04:15.03,0:04:17.67,Default,,0000,0000,0000,,another of humankind's greatest assets:
Dialogue: 0,0:04:17.67,0:04:19.51,Default,,0000,0000,0000,,hope.