WEBVTT FILE 1 00:00:00.000 --> 00:00:04.572 "Hubble Spots Comet Near Jupiter" 2 00:00:04.572 --> 00:00:16.243 Hubble took this image of the comet P/2019 LD2, and its 400,000-mile-long tail. 3 00:00:16.243 --> 00:00:20.823 It was found near the Trojan asteroids... 4 00:00:20.823 --> 00:00:29.679 ...believed to be leftover material from the formation of the outer planets billions of years ago. 5 00:00:29.679 --> 00:00:41.350 The Trojans orbit the Sun in two groups, with one group trailing behind Jupiter and the other leading ahead in its path. 6 00:00:41.350 --> 00:00:50.386 This is the first time a comet has been discovered near the Trojan asteroids. 7 00:00:50.386 --> 00:01:01.804 The comet came from a region of icy debris beyond Neptune’s orbit, called the Kuiper belt. 8 00:01:01.804 --> 00:01:13.908 After traveling for billions of miles, it was captured by Jupiter’s powerful gravity. 9 00:01:13.908 --> 00:01:24.207 But the unexpected guest will not stay among the asteroids for very long. 10 00:01:24.207 --> 00:01:35.192 Computer simulations show that Jupiter will kick the comet into the inner solar system. 11 00:01:35.195 --> 00:01:44.484 Simulations also show that in about 500.000 years. there’s a 90 percent chance... 12 00:01:44.484 --> 00:01:54.000 ...that it will be ejected from the solar system and become an interstellar comet. 13 00:01:54.000 --> 00:02:06.000 Until then, Hubble’s views help us better understand the comet P/2019 LD2. 14 00:02:06.000 --> 00:02:13.900 [ SILENCE ]