1 00:01:35,030 --> 00:01:32,310 endeavor crater is this giant highly 2 00:01:37,830 --> 00:01:35,040 eroded ancient crater on mars 3 00:01:41,270 --> 00:01:37,840 it's over 20 kilometers in diameter so 4 00:01:43,190 --> 00:01:41,280 over 12 miles wide we're interested in 5 00:01:46,310 --> 00:01:43,200 endeavor crater because we see in its 6 00:01:48,149 --> 00:01:46,320 rim evidence of clay minerals and clay 7 00:01:50,870 --> 00:01:48,159 minerals are a class of minerals that 8 00:01:53,830 --> 00:01:50,880 form in neutral ph water so this is very 9 00:02:01,429 --> 00:01:53,840 exciting from the possibility of mars at 10 00:02:04,789 --> 00:02:02,709 we're going to map out these clay 11 00:02:06,870 --> 00:02:04,799 minerals we're going to find what story 12 00:02:08,550 --> 00:02:06,880 those minerals tell us about ancient 13 00:02:11,190 --> 00:02:08,560 mars and the implications for the 14 00:02:13,670 --> 00:02:11,200 habitability of mars 15 00:02:15,589 --> 00:02:13,680 a long long time ago and there's a lot 16 00:02:18,150 --> 00:02:15,599 of real estate to explore we're talking 17 00:02:20,150 --> 00:02:18,160 about kilometers of distance 18 00:02:22,710 --> 00:02:20,160 as we move along the rim of endeavour 19 00:02:25,110 --> 00:02:22,720 crater so it's not just one spot there's