1 00:00:09,860 --> 00:00:08,059 and solidus is an amazing place it's one 2 00:00:13,539 --> 00:00:09,870 of the most remarkable places we found 3 00:00:17,810 --> 00:00:13,549 in the Saturn system it's got these 4 00:00:20,779 --> 00:00:17,820 fractures that are spouting water vapor 5 00:00:23,840 --> 00:00:20,789 and ice these enormous plumes coming out 6 00:00:25,970 --> 00:00:23,850 of the South Pole the geysers on 7 00:00:28,099 --> 00:00:25,980 Enceladus are actually quite a lot like 8 00:00:29,689 --> 00:00:28,109 Old Faithful geyser or other geysers in 9 00:00:31,310 --> 00:00:29,699 Yellowstone National Park that we are 10 00:00:33,709 --> 00:00:31,320 familiar with in fact the total amount 11 00:00:35,630 --> 00:00:33,719 of material coming out of Old Faithful 12 00:00:37,190 --> 00:00:35,640 in one of its eruptions is similar to 13 00:00:40,330 --> 00:00:37,200 the amount of material that comes out of 14 00:00:45,470 --> 00:00:42,619 obviously there's a source of water down 15 00:00:47,660 --> 00:00:45,480 there it's coming out everywhere so how 16 00:00:49,220 --> 00:00:47,670 big it is how extensive people don't 17 00:00:51,619 --> 00:00:49,230 know for sure because it's so much 18 00:00:53,900 --> 00:00:51,629 colder we don't get liquid water coming 19 00:00:56,139 --> 00:00:53,910 out of those guys as we get a lot of 20 00:00:58,549 --> 00:00:56,149 very fine ice particles a lot of vapor 21 00:01:00,680 --> 00:00:58,559 for this flyby we're coming down from 22 00:01:04,579 --> 00:01:00,690 the North going past the equator and 23 00:01:06,679 --> 00:01:04,589 down under the South Pole the shuttle in 24 00:01:09,230 --> 00:01:06,689 orbit around the Earth is there about 25 00:01:12,380 --> 00:01:09,240 300 kilometers up we're going to be 26 00:01:14,450 --> 00:01:12,390 about six times closer than that the 27 00:01:16,910 --> 00:01:14,460 closest approach point is just a little 28 00:01:18,590 --> 00:01:16,920 below the equator but by the time we get 29 00:01:20,539 --> 00:01:18,600 down near the South Pole where the 30 00:01:22,910 --> 00:01:20,549 plumes are we're gonna be up more like 31 00:01:24,590 --> 00:01:22,920 200 kilometers to altitude we just sort 32 00:01:27,620 --> 00:01:24,600 of grazed the edge of the plume last 33 00:01:30,679 --> 00:01:27,630 time in 2005 this time we're really 34 00:01:33,770 --> 00:01:30,689 plunging into the plume the measurements 35 00:01:36,920 --> 00:01:33,780 made by the instruments will certainly 36 00:01:39,319 --> 00:01:36,930 lead to understanding the interior how 37 00:01:41,450 --> 00:01:39,329 extensive the water source is what 38 00:01:44,300 --> 00:01:41,460 processes are forming the skies earth 39 00:01:45,710 --> 00:01:44,310 will really be tasting the plume taking 40 00:01:47,210 --> 00:01:45,720 the material from the flew into the 41 00:01:53,090 --> 00:01:47,220 instruments on board the spacecraft and 42 00:01:55,069 --> 00:01:53,100 analyzing them how risky is it to be 43 00:01:58,090 --> 00:01:55,079 flying through this part of the probes 44 00:02:00,770 --> 00:01:58,100 the particles are very small 45 00:02:02,929 --> 00:02:00,780 micron-sized particles none of the big 46 00:02:05,389 --> 00:02:02,939 particles can get lofted by the plumes 47 00:02:07,700 --> 00:02:05,399 to be as high as we're going to be so