1 00:00:00,930 --> 00:00:04,470 [Music] 2 00:00:09,190 --> 00:00:06,630 this beautiful mosaic is the most 3 00:00:11,350 --> 00:00:09,200 detailed image ever taken on the surface 4 00:00:13,270 --> 00:00:11,360 of mars it captures some of the 5 00:00:15,270 --> 00:00:13,280 sedimentary rocks that scientists came 6 00:00:17,349 --> 00:00:15,280 to the red planet to study 7 00:00:19,189 --> 00:00:17,359 only the very edges of the rover are 8 00:00:21,830 --> 00:00:19,199 visible in this mosaic 9 00:00:24,070 --> 00:00:21,840 nasa's perseverance mars rover is now 10 00:00:25,830 --> 00:00:24,080 exploring a really important part of 11 00:00:29,029 --> 00:00:25,840 jezreel crater 12 00:00:31,750 --> 00:00:29,039 around 3.5 billion years ago a river 13 00:00:34,310 --> 00:00:31,760 flowed into lake jezreel depositing mud 14 00:00:36,709 --> 00:00:34,320 and sand on the crater floor forming an 15 00:00:39,030 --> 00:00:36,719 ancient delta what you see are some of 16 00:00:40,869 --> 00:00:39,040 the hills and cliffs at the edge of that 17 00:00:42,869 --> 00:00:40,879 delta 18 00:00:45,430 --> 00:00:42,879 here you can see some of perseverance's 19 00:00:47,510 --> 00:00:45,440 wheel tracks showing where we came from 20 00:00:53,750 --> 00:00:47,520 on the crater floor where we spent the 21 00:00:58,389 --> 00:00:55,830 take a look at the darker gray layered 22 00:01:00,950 --> 00:00:58,399 rocks that make up the roughly 32 foot 23 00:01:03,029 --> 00:01:00,960 tall cliff in front of the rover you can 24 00:01:05,990 --> 00:01:03,039 see very clear horizontal layers in 25 00:01:08,630 --> 00:01:06,000 these rocks and you'll also notice 26 00:01:10,710 --> 00:01:08,640 pieces of the cliff have broken off and 27 00:01:13,109 --> 00:01:10,720 tumbled downhill 28 00:01:15,109 --> 00:01:13,119 one of the more interesting ones is the 29 00:01:17,350 --> 00:01:15,119 three foot tall boulder called betty's 30 00:01:22,200 --> 00:01:17,360 rock which perseverance was able to get 31 00:01:30,469 --> 00:01:28,630 [Music] 32 00:01:34,149 --> 00:01:30,479 these rocks have been sitting on the 33 00:01:35,749 --> 00:01:34,159 surface of mars for billions of years 34 00:01:38,550 --> 00:01:35,759 and over that time 35 00:01:41,030 --> 00:01:38,560 wind erosion has shaped the surface into 36 00:01:41,980 --> 00:01:41,040 pretty interesting forms like this 37 00:01:50,389 --> 00:01:41,990 balanced rock 38 00:01:52,710 --> 00:01:50,399 [Music] 39 00:01:55,030 --> 00:01:52,720 immediately surrounding the rover is an 40 00:01:57,510 --> 00:01:55,040 area called hog wallow flats 41 00:01:59,350 --> 00:01:57,520 previously known as the bacon strip 42 00:02:00,400 --> 00:01:59,360 based on its appearance in orbital 43 00:02:01,749 --> 00:02:00,410 images 44 00:02:03,350 --> 00:02:01,759 [Music] 45 00:02:05,670 --> 00:02:03,360 take a look at the bright rocks the 46 00:02:07,830 --> 00:02:05,680 rover is sitting on we think these are 47 00:02:11,110 --> 00:02:07,840 some of the finest grained sedimentary 48 00:02:13,030 --> 00:02:11,120 rocks deposited in the delta 49 00:02:15,190 --> 00:02:13,040 fine grain rocks are important because 50 00:02:17,670 --> 00:02:15,200 they're typically really good places to 51 00:02:20,390 --> 00:02:17,680 look for signs of ancient life 52 00:02:22,869 --> 00:02:20,400 we'd plan to do up to five abrasions on 53 00:02:25,990 --> 00:02:22,879 the rocks in this area that's where we 54 00:02:28,390 --> 00:02:26,000 use our drill to expose a fresh surface 55 00:02:29,910 --> 00:02:28,400 which allows us to analyze the chemistry 56 00:02:32,150 --> 00:02:29,920 and mineralogy 57 00:02:33,670 --> 00:02:32,160 but mars threw us some curve balls and 58 00:02:34,949 --> 00:02:33,680 these softer rocks didn't always 59 00:02:36,710 --> 00:02:34,959 cooperate 60 00:02:39,110 --> 00:02:36,720 here you can see the result of one of 61 00:02:41,110 --> 00:02:39,120 our abrasion attempts the rock crumbled 62 00:02:44,070 --> 00:02:41,120 during the abrasion preventing us from 63 00:02:46,390 --> 00:02:44,080 analyzing the spot 64 00:02:48,630 --> 00:02:46,400 we had two unlucky abrasion attempts in 65 00:02:50,869 --> 00:02:48,640 this area before achieving success at 66 00:02:53,509 --> 00:02:50,879 the skinner ridge outcrop 67 00:02:56,070 --> 00:02:53,519 here we collected our first two rockcore 68 00:02:58,869 --> 00:02:56,080 samples from the delta and since then 69 00:03:01,030 --> 00:02:58,879 we've collected two more 70 00:03:03,350 --> 00:03:01,040 perseverance drove to the delta because 71 00:03:05,750 --> 00:03:03,360 it is a very promising place to look for 72 00:03:07,910 --> 00:03:05,760 signs of ancient life we hope to learn 73 00:03:09,830 --> 00:03:07,920 more when a future mission brings these 74 00:03:11,830 --> 00:03:09,840 samples back to earth