1 00:00:00,334 --> 00:00:04,037 Here's what you need to know about Enceladus. 2 00:00:04,071 --> 00:00:05,772 One of Saturn's many moons, 3 00:00:05,806 --> 00:00:08,976 Enceladus is a small, icy body 4 00:00:09,009 --> 00:00:12,279 with the whitest, most reflective surface in the solar system. 5 00:00:12,312 --> 00:00:14,448 Dive deeper 6 00:00:14,481 --> 00:00:15,782 and you'll discover this icy world 7 00:00:15,816 --> 00:00:18,986 is actually an ocean world. 8 00:00:19,019 --> 00:00:22,623 Deep below Enceladus' frozen surface 9 00:00:22,656 --> 00:00:26,126 resides a massive liquid saltwater ocean. 10 00:00:26,159 --> 00:00:29,897 But the water doesn't stay beneath its icy crust forever. 11 00:00:31,431 --> 00:00:33,133 Massive geysers spew water vapor 12 00:00:33,166 --> 00:00:36,570 and ice particles hundreds of miles into space. 13 00:00:36,603 --> 00:00:39,506 Some of these particles fall back to the moon, 14 00:00:39,540 --> 00:00:43,477 giving Enceladus its bright white surface 15 00:00:43,510 --> 00:00:48,215 while others escape to form one of Saturn's iconic planetary rings. 16 00:00:48,248 --> 00:00:51,652 During its visit to the Saturn system, 17 00:00:51,685 --> 00:00:55,556 NASA's Cassini spacecraft flew through 18 00:00:55,589 --> 00:00:58,792 and sampled these icy jets of subsurface ocean. 19 00:00:58,825 --> 00:01:02,296 These continuously spewing geysers are chock-full of a surprising mix of: 20 00:01:02,329 --> 00:01:04,031 volatile gases, water vapor, 21 00:01:04,064 --> 00:01:05,532 carbon dioxide, organic compounds 22 00:01:05,566 --> 00:01:08,202 (the chemical ingredients needed for life). 23 00:01:08,235 --> 00:01:10,204 Cassini also detected materials that point to the existence 24 00:01:10,237 --> 00:01:12,639 of deep-sea hydrothermal activity, 25 00:01:12,673 --> 00:01:16,076 previously known to exist only on Earth. 26 00:01:16,109 --> 00:01:19,479 The fascinating discoveries made at Enceladus 27 00:01:19,513 --> 00:01:25,519 all point to the possibility of an ocean world where life could exist. 28 00:01:25,552 --> 00:01:30,691 And that's what you need to know about Enceladus.