1 00:00:00,133 --> 00:00:03,103 [Music throughout] [Far and Wide Part 4: Teamwork] 2 00:00:03,103 --> 00:00:06,406 The James Webb and Nancy Grace Roman Space Telescopes 3 00:00:06,406 --> 00:00:09,976 are two missions with different, but overlapping, science goals. 4 00:00:10,810 --> 00:00:14,014 Both will help us understand the history of the universe 5 00:00:14,280 --> 00:00:17,117 and what other worlds exist in it now. 6 00:00:17,117 --> 00:00:20,186 They will bring us closer to answering fundamental questions 7 00:00:20,186 --> 00:00:21,821 like “where do we come from?” 8 00:00:21,821 --> 00:00:23,189 And “are we alone?” 9 00:00:24,057 --> 00:00:26,960 No one telescope can make all the observations 10 00:00:26,960 --> 00:00:29,963 necessary to potentially answer these questions. 11 00:00:30,230 --> 00:00:33,233 So NASA and its partners have created several. 12 00:00:33,566 --> 00:00:35,268 Roman and Webb will be together 13 00:00:35,268 --> 00:00:38,838 not just in spirit, but also in their location in space. 14 00:00:39,339 --> 00:00:41,908 Both spacecraft will orbit a special place 15 00:00:41,908 --> 00:00:44,077 called Sun-Earth Lagrange Point Two, 16 00:00:44,077 --> 00:00:45,111 or L2, 17 00:00:45,111 --> 00:00:47,347 where the gravitational pull of the Earth 18 00:00:47,347 --> 00:00:50,350 and Sun reach equilibrium. 19 00:00:50,450 --> 00:00:53,053 Located a million miles beyond Earth's orbit, 20 00:00:53,053 --> 00:00:56,923 a satellite at L2 orbits the Sun, with Earth's gravity 21 00:00:56,923 --> 00:01:00,260 providing an extra tug to help it stay even with the planet. 22 00:01:01,761 --> 00:01:03,797 The advantage of orbiting L2 23 00:01:03,797 --> 00:01:05,732 is that both spacecraft will be far 24 00:01:05,732 --> 00:01:09,769 from any interference of Earth, the moon, or other spacecraft. 25 00:01:10,336 --> 00:01:12,939 Their orbits are huge, keeping them well away 26 00:01:12,939 --> 00:01:15,942 from each other or any other spacecraft at L2. 27 00:01:16,409 --> 00:01:19,646 It's colder there, critical for infrared observations, 28 00:01:21,448 --> 00:01:24,451 and they never have Earth blocking most of their view. 29 00:01:24,751 --> 00:01:29,589 Hubble, orbiting only 300 miles above the ground, has more limitations 30 00:01:29,589 --> 00:01:32,559 on where it can point at any given moment. 31 00:01:33,526 --> 00:01:37,831 Because both telescopes will operate at the same time, they can work together 32 00:01:37,831 --> 00:01:41,668 to discover far more about the cosmos than either could learn alone. 33 00:01:42,502 --> 00:01:45,472 When Roman makes an intriguing exoplanet discovery, 34 00:01:45,738 --> 00:01:49,976 Webb may be able to follow up soon after, helping scientists learn more. 35 00:01:50,543 --> 00:01:53,880 When Roman detects a transient event like a supernova somewhere 36 00:01:53,880 --> 00:01:58,017 in its broad coverage, Webb can focus in to take deeper measurements. 37 00:01:58,985 --> 00:02:02,789 Should Webb find an interesting quirk in a nearby galaxy it's studying, 38 00:02:03,056 --> 00:02:06,826 Roman can provide context with thousands of galaxies around it. 39 00:02:07,527 --> 00:02:11,364 Using the two telescopes in concert, both with unprecedented, 40 00:02:11,364 --> 00:02:15,602 but different, capabilities, scientists will be able to make more 41 00:02:15,602 --> 00:02:20,173 and faster progress than if only one telescope operated at a time. 42 00:02:21,241 --> 00:02:23,510 Two of the greatest space telescopes 43 00:02:23,510 --> 00:02:25,411 ever built will work together, 44 00:02:25,979 --> 00:02:27,780 using each other's strengths 45 00:02:27,780 --> 00:02:30,483 to advance our knowledge of the universe. 46 00:02:31,651 --> 00:02:35,555 [NASA]