1 00:00:06,430 --> 00:00:02,790 foreign 2 00:00:10,190 --> 00:00:06,440 [Music] 3 00:00:12,169 --> 00:00:10,200 ji the 27th SpaceX cargo return I'll 4 00:00:14,209 --> 00:00:12,179 walk in space and celebrating our home 5 00:00:15,890 --> 00:00:14,219 planet it's space to ground the Earth 6 00:00:18,230 --> 00:00:15,900 Day Edition 7 00:00:20,630 --> 00:00:18,240 4 300 pounds of Science and cargo 8 00:00:22,609 --> 00:00:20,640 returned to Earth on Saturday April 15th 9 00:00:24,830 --> 00:00:22,619 aboard spacex's uncrewed Dragon 10 00:00:27,290 --> 00:00:24,840 spacecraft which splashed down off the 11 00:00:29,210 --> 00:00:27,300 coast of Tampa Florida among the science 12 00:00:30,890 --> 00:00:29,220 Frozen dwarf tomatoes that were 13 00:00:32,690 --> 00:00:30,900 harvested will be examined for the 14 00:00:35,270 --> 00:00:32,700 effects of light quality and fertilizer 15 00:00:36,709 --> 00:00:35,280 on fruit production microbial safety and 16 00:00:39,229 --> 00:00:36,719 nutritional value 17 00:00:41,350 --> 00:00:39,239 on Tuesday two Russian cosmonauts took a 18 00:00:43,850 --> 00:00:41,360 walk in space to move a radiator 19 00:00:45,889 --> 00:00:43,860 this was the first of three spacewalks 20 00:00:47,869 --> 00:00:45,899 for Expedition 69 Commander Sergey 21 00:00:50,029 --> 00:00:47,879 prokopiev and flight engineer Dimitri 22 00:00:52,069 --> 00:00:50,039 pedalin who exited the poisk module to 23 00:00:54,590 --> 00:00:52,079 move a radiator from the raspat module 24 00:00:56,569 --> 00:00:54,600 to the Noka science module a pair of 25 00:00:58,549 --> 00:00:56,579 astronauts will exit the hatch on April 26 00:01:01,010 --> 00:00:58,559 28th to prepare the space station for 27 00:01:02,810 --> 00:01:01,020 continued solar array upgrades you can 28 00:01:04,789 --> 00:01:02,820 learn more about the spacewalk during 29 00:01:08,390 --> 00:01:04,799 our preview briefing on Monday April 30 00:01:10,190 --> 00:01:08,400 24th at 2 pm Eastern for all upcoming 31 00:01:12,950 --> 00:01:10,200 spacewalks you can catch live coverage 32 00:01:14,530 --> 00:01:12,960 on NASA TV on the agencies app and on 33 00:01:17,450 --> 00:01:14,540 the website 34 00:01:19,490 --> 00:01:17,460 250 miles above our home planet sits the 35 00:01:21,710 --> 00:01:19,500 International Space Station with 16 36 00:01:23,630 --> 00:01:21,720 sunrises and sunsets a day we have been 37 00:01:25,730 --> 00:01:23,640 able to study our planet from multiple 38 00:01:28,550 --> 00:01:25,740 locations during the day and night 39 00:01:30,230 --> 00:01:28,560 as we celebrate Earth Day on Saturday we 40 00:01:32,149 --> 00:01:30,240 continue to focus on the well-being of 41 00:01:34,429 --> 00:01:32,159 our planet including how humans are 42 00:01:35,870 --> 00:01:34,439 affecting its climate astronauts and 43 00:01:37,850 --> 00:01:35,880 instruments aboard the space station 44 00:01:40,069 --> 00:01:37,860 have the ability to track factors 45 00:01:42,170 --> 00:01:40,079 influencing climate over long periods 46 00:01:43,789 --> 00:01:42,180 and the data gathered helps inform 47 00:01:46,370 --> 00:01:43,799 climate decisions that help us 48 00:01:48,770 --> 00:01:46,380 understand and care for our planet 49 00:01:50,330 --> 00:01:48,780 ecostress an instrument on the exterior 50 00:01:51,889 --> 00:01:50,340 of the space station measures the 51 00:01:54,350 --> 00:01:51,899 temperature on the ground which is 52 00:01:56,630 --> 00:01:54,360 hotter during the day than the air Urban 53 00:01:59,149 --> 00:01:56,640 surfaces like concrete are often much 54 00:02:01,069 --> 00:01:59,159 hotter than a field for example this is 55 00:02:03,170 --> 00:02:01,079 one of the ways Urban heat experts have 56 00:02:04,789 --> 00:02:03,180 noted that extreme temperatures can be 57 00:02:07,069 --> 00:02:04,799 deadly due to an urban heat island 58 00:02:09,050 --> 00:02:07,079 effect this is when temperatures Do not 59 00:02:11,690 --> 00:02:09,060 drop sufficiently at night face to 60 00:02:13,790 --> 00:02:11,700 ground with more than 3.5 million images 61 00:02:16,130 --> 00:02:13,800 of Earth taken by crew from the space 62 00:02:18,050 --> 00:02:16,140 station crew Earth observations is one 63 00:02:20,390 --> 00:02:18,060 of the longest running records of how 64 00:02:22,610 --> 00:02:20,400 our planet changes over time 65 00:02:24,470 --> 00:02:22,620 at the moment the program supports a 66 00:02:26,630 --> 00:02:24,480 number of studies including Urban night 67 00:02:28,309 --> 00:02:26,640 lighting glaciers and volcanoes and 68 00:02:30,050 --> 00:02:28,319 Atmospheric processes affected by 69 00:02:32,030 --> 00:02:30,060 volcanic eruptions 70 00:02:34,190 --> 00:02:32,040 for more on the signs taking place 71 00:02:36,770 --> 00:02:34,200 aboard the space station don't forget to 72 00:02:38,390 --> 00:02:36,780 follow at ISS underscore research that's 73 00:02:40,010 --> 00:02:38,400 space to ground for this week thanks so 74 00:02:41,630 --> 00:02:40,020 much for watching we hope that you have 75 00:02:45,570 --> 00:02:41,640 a happy Earth Day and we'll see you next 76 00:02:45,580 --> 00:02:52,390 [Music]