1 00:00:03,180 --> 00:00:05,620 Welcome to Space to Ground, I'm Leah Cheshier. 2 00:00:05,629 --> 00:00:08,870 Summer time might be coming to an end, but astronauts on the space station 3 00:00:08,870 --> 00:00:12,580 still have palm trees on their mind, and in the lab. 4 00:00:14,000 --> 00:00:15,720 As we look to go forward to the moon 5 00:00:15,740 --> 00:00:18,980 and on to Mars with Artemis, researchers are interested in learning 6 00:00:18,980 --> 00:00:22,300 more about how plants germinate in a microgravity environment. 7 00:00:22,700 --> 00:00:27,140 The United Arab Emirates Palm Tree Growth Experiment observes and documents root development 8 00:00:27,140 --> 00:00:31,790 of the Date Palm while in space. Evidence of healthy plant tissue grown in 9 00:00:31,790 --> 00:00:37,140 microgravity may support possibility of future explorers growing plants for consumption and other purposes. 10 00:00:38,060 --> 00:00:40,840 Meanwhile on terra firma, three crew members are 11 00:00:40,840 --> 00:00:43,200 finishing up final preparations prior to launch. 12 00:00:45,000 --> 00:00:49,220 After completing ceremonial activities and mission briefings the Expedition 61 13 00:00:49,220 --> 00:00:53,810 crew of Jessica Meir, Oleg Skripochka, and Hazzaa Ali Almansoori departed the 14 00:00:53,810 --> 00:00:57,590 Gagarin Cosmonaut Training Center in Star City Russia and arrived at the 15 00:00:57,590 --> 00:01:02,000 Baikonur Cosmodrome in Kazakhstan. Here they'll finalise pre-launch training 16 00:01:02,000 --> 00:01:05,479 before beginning their journey to the space station, with a liftoff on the 17 00:01:05,480 --> 00:01:09,420 Soyuz MS-15 spacecraft scheduled for September 25th. 18 00:01:10,720 --> 00:01:16,380 This week's question is from Sohan, who asks how the space station is protected against radiation and debris. 19 00:01:17,520 --> 00:01:20,680 Space Station modules are made from an outer layer of aluminum, 20 00:01:20,690 --> 00:01:25,790 an insulation layer, a debris shield layer similar to Kevlar, and a second debris 21 00:01:25,790 --> 00:01:29,520 shield layer of aluminum. This amounts to protection against debris, 22 00:01:29,540 --> 00:01:35,100 micrometeoroids and radiation as well as it reflects the intense sunlight.