WEBVTT FILE 1 00:00:00.000 --> 00:00:01.568 [music] 2 00:00:01.868 --> 00:00:04.170 Across the country in Greenbelt, Maryland, 3 00:00:04.170 --> 00:00:06.606 scientists at the Goddard Space Flight Center 4 00:00:06.606 --> 00:00:09.209 are also busy analyzing lunar samples. 5 00:00:09.609 --> 00:00:11.211 Dr. Isidore Adler tells 6 00:00:11.211 --> 00:00:13.346 what his group has found so far. 7 00:00:13.413 --> 00:00:15.482 There is a much higher concentration 8 00:00:15.482 --> 00:00:16.483 of some minerals. 9 00:00:16.483 --> 00:00:17.150 For example, 10 00:00:17.150 --> 00:00:19.352 there is a mineral called ilmenite, 11 00:00:19.352 --> 00:00:22.088 which is an iron titanium oxide, 12 00:00:22.088 --> 00:00:24.090 which appears to be unusually high 13 00:00:24.090 --> 00:00:26.292 in concentration in these rocks. 14 00:00:26.526 --> 00:00:28.028 And it seems to indicate 15 00:00:28.028 --> 00:00:29.829 perhaps, that at some time or other, 16 00:00:29.829 --> 00:00:31.531 the Moon was exposed, 17 00:00:31.531 --> 00:00:33.566 at least these surface materials, 18 00:00:33.566 --> 00:00:35.902 to some rather severe heating. 19 00:00:36.236 --> 00:00:37.971 So these frozen samples 20 00:00:37.971 --> 00:00:39.105 were actually collected 21 00:00:39.105 --> 00:00:40.106 from a region on the Moon 22 00:00:40.106 --> 00:00:42.075 that was in shadow from the Sun. 23 00:00:42.075 --> 00:00:44.310 So it was basically a large boulder. 24 00:00:44.344 --> 00:00:45.178 In the near future, 25 00:00:45.178 --> 00:00:46.112 we're going back to the Moon 26 00:00:46.112 --> 00:00:47.180 and hopefully going to the polar 27 00:00:47.180 --> 00:00:47.914 regions of the Moon, 28 00:00:47.914 --> 00:00:49.015 where some of these regions 29 00:00:49.015 --> 00:00:50.483 are in permanent shadow. 30 00:00:50.483 --> 00:00:51.584 These particular samples 31 00:00:51.584 --> 00:00:52.719 are really great analogs 32 00:00:52.719 --> 00:00:54.320 for what we might expect 33 00:00:54.320 --> 00:00:55.955 to see in the polar regions 34 00:00:55.955 --> 00:00:57.223 when we go back. 35 00:00:57.223 --> 00:00:59.092 [music]