WEBVTT FILE 1 00:00:00.100 --> 00:00:05.166 Launching in 2021, NASA's Lucy Mission will fly by seven different Trojan asteroids 2 00:00:05.166 --> 00:00:07.866 orbiting the same distance from the Sun as Jupiter 3 00:00:07.866 --> 00:00:10.400 The mission has four main science objectives: 4 00:00:10.400 --> 00:00:13.600 To study surface geology by mapping craters and other land forms 5 00:00:13.600 --> 00:00:16.833 to determine the age and nature of exterior features; 6 00:00:16.833 --> 00:00:20.466 To map the color and mineral composition of the asteroids’ surfaces; 7 00:00:20.466 --> 00:00:24.566 To determine what’s beneath the surface as well as each asteroid’s mass and density; 8 00:00:24.566 --> 00:00:29.600 And finally, Lucy will look for and study any satellites and rings around the asteroids. 9 00:00:29.600 --> 00:00:32.166 Several instruments are being built for the mission: 10 00:00:32.166 --> 00:00:34.766 L’TES – a thermal emission spectrometer; 11 00:00:34.766 --> 00:00:37.866 L’LORRI – a long-range high-resolution imager; 12 00:00:37.866 --> 00:00:41.833 and L’Ralph – a color imager and infrared spectrometer. 13 00:00:41.833 --> 00:00:44.100 Twin navigation cameras and a high gain antenna 14 00:00:44.100 --> 00:00:46.800 will also help investigate these Trojan asteroids, 15 00:00:46.800 --> 00:00:50.466 which are remnants of the same primordial material that formed the outer planets, 16 00:00:50.466 --> 00:00:53.700 and have so far only been studied with Earth-bound telescopes. 17 00:00:53.700 --> 00:00:56.400 So, as Lucy achieves its science objectives, 18 00:00:56.400 --> 00:01:00.566 we’ll be opening up a time capsule dating back to the birth of our solar system. 19 00:01:00.566 --> 00:01:03.433 The findings will be extraordinary.