1 00:00:00,000 --> 00:00:05,005 [music] 2 00:00:05,005 --> 00:00:07,941 In April 2018, the Hubble Space Telescope premiered this image 3 00:00:07,941 --> 00:00:12,212 of the Lagoon Nebula 4 00:00:12,212 --> 00:00:19,019 The image honors Hubble's 28th year in orbit. 5 00:00:19,019 --> 00:00:22,022 Even after 27 years, Hubble continues to further humanity's 6 00:00:22,022 --> 00:00:26,026 knowledge of the universe 7 00:00:26,026 --> 00:00:29,529 Here are several science achievements from Hubble's 8 00:00:29,529 --> 00:00:33,534 latest year of observations. 9 00:00:33,534 --> 00:00:36,970 Within our own solar system, Hubble observed Neptune's 10 00:00:36,970 --> 00:00:42,042 shrinking storm, 11 00:00:42,042 --> 00:00:46,046 an asteroid that slit in half 5000 years ago and is sprouting 12 00:00:46,046 --> 00:00:55,055 a comet tail, 13 00:00:55,055 --> 00:01:02,329 and the farthest active inbound comet, nicknamed "K2." 14 00:01:02,329 --> 00:01:05,332 Exploring beyond our solar system, 15 00:01:05,332 --> 00:01:08,502 Hubble astronomers discovered many new characteristics of 16 00:01:08,502 --> 00:01:11,004 planets around other stars, 17 00:01:11,004 --> 00:01:14,508 from finding that water is common in these "exoplanet" 18 00:01:14,508 --> 00:01:15,842 atmospheres, 19 00:01:15,842 --> 00:01:19,846 to finding different types of atmospheres among large planets 20 00:01:19,846 --> 00:01:22,516 called "hot Jupiters." 21 00:01:22,516 --> 00:01:26,019 Hubble observed four Earth-sized planets in the habitable zone of 22 00:01:26,019 --> 00:01:27,521 the star TRAPPIST-1. 23 00:01:27,521 --> 00:01:31,358 The observations showed no signs of thick, puffy atmospheres on 24 00:01:31,358 --> 00:01:33,927 at least three planets, 25 00:01:33,927 --> 00:01:37,531 increasing the likelihood that these are rocky, terrestrial 26 00:01:37,531 --> 00:01:41,535 planets. 27 00:01:41,535 --> 00:01:45,539 Hubble observed visible light from the first identified source 28 00:01:45,539 --> 00:01:51,044 of gravitational waves, created when two neutron stars collided. 29 00:01:51,044 --> 00:01:55,048 With Hubble data, astronomers used graviational lensing to 30 00:01:55,048 --> 00:02:01,421 determine the mass of a white dwarf star. 31 00:02:01,421 --> 00:02:08,996 Hubble observed a massive dying star being reborn as a black 32 00:02:08,996 --> 00:02:13,633 hole. 33 00:02:13,633 --> 00:02:17,671 Hubble witnessed light from a supernova explosion reflecting 34 00:02:17,671 --> 00:02:25,679 off a dust cloud, which created this "light echo." 35 00:02:25,679 --> 00:02:30,017 Astronomers using Hubble refined the Hubble constant. 36 00:02:30,017 --> 00:02:34,354 This revealed that the expansion of our universe is accelerating 37 00:02:34,354 --> 00:02:38,025 even faster than expected. 38 00:02:38,025 --> 00:02:42,029 And Hubble premiered a 360-degree fly-through of the 39 00:02:42,029 --> 00:02:45,365 Orion Nebula... 40 00:02:45,365 --> 00:02:49,536 so that those of us down on Earth can imagine flying amongst 41 00:02:49,536 --> 00:02:52,973 the stars. 42 00:02:52,973 --> 00:02:59,046 [music] 43 00:02:59,046 --> 00:03:06,653 For more information about Hubble's scientific discoveries 44 00:03:06,653 --> 00:00:00,000 www.nasa.gov/hubble @NASAHubble