00:06Yippee!
00:08Oh, talk about falling with style.
00:10Buzz, I can't believe you were actually in space.
00:13Yeah.
00:14It's true.
00:15I was the first space ranger to visit the International Space Station.
00:18Way to go, Buzzarino.
00:19Let me show you.
00:21Buzz Lightyear, Mission Logs.
00:24Episode 2, International Space Station.
00:29Oh, that's a very stylish falling technique he's got there.
00:32Very nice.
00:32What are they doing, Buzz?
00:34Let me tell you.
00:34The astronauts and cosmonauts at the station work hard every day to keep it running.
00:38Wow.
00:39They must have to run on that thing for hours just to keep the lights on.
00:43The space station isn't powered manually, Rex.
00:45It's powered by photovoltaic cells that harness the energy of the sun.
00:49Solar energy, of course.
00:50Yeah, I knew that.
00:51Then what are they doing, Buzz?
00:53Exercising.
00:54Here on Earth, people get a lot of exercise without even knowing it, because their bodies
00:58are constantly working against the force of gravity.
01:01Gravity?
01:01Yes, gravity.
01:03Gravity is a force on Earth that keeps us on the ground.
01:05At the International Space Station, 220 miles above the Earth, gravity is about a million
01:10times weaker.
01:11So the astronauts and cosmonauts float.
01:14Oh, that sounds relaxing.
01:15Well, it would be relaxing, except that people are designed to need some kind of exertion
01:20to keep their muscles and bones healthy.
01:22So the astronauts and cosmonauts need to exercise a lot.
01:26Hey, look, they're spinning.
01:29I guess they don't like heavy meals, huh?
01:33Amazing.
01:34They even have to tether themselves to something when they sleep.
01:37Otherwise...
01:38Buzz, watch out!
01:39Not to worry.
01:40I had it all under control.
01:42Whew.
01:43Yikes.
01:44What are they doing outside?
01:45Is this part of their exercise routine?
01:49They're conducting a spacewalk, also known as extravehicular activity.
01:52Or a EVA, for short.
01:55That's right, Ham.
01:56They are done only for extremely important scientific and engineering missions.
01:59Wow.
02:00This astronaut is working on the robotic arm.
02:03Crew members use this for experiments and repairs.
02:06How long do they stay outside of the space station?
02:09When I was on board, I observed the average spacewalk was between three and eight hours.
02:14Whoa.
02:14But how can they breathe that long?
02:16Yeah.
02:17They have the most advanced spacesuits ever designed.
02:19Better than yours, Buzz?
02:21Yes.
02:22No.
02:22I mean...
02:24Each one is like a self-contained mobile life support system
02:27with an oxygen supply, electrical power, ventilation fan,
02:30and even an in-suit drink dispenser.
02:33Ooh.
02:33Inside the spacesuit, they have a liquid cooling and ventilation garment.
02:37This bodysuit is laced with thin plastic tubes
02:39that send cooling water all around the astronaut,
02:42keeping them comfortable while they work in the merciless solar heat
02:45and intense cold of space.
02:47Oh, stylish and functional.
02:49Very nice.
02:50But no retractable wings.
02:53No.
02:53No wings.
02:59Danny, I see the airlock thermal cover is open.
03:01You can egress the airlock.
03:03Roger that.
03:23How was it?
03:24He did it!
03:26Hooray!
03:27If you want to know more,
03:28you can visit this NASA website.
03:30Buzz, this is amazing!
03:47It's amazing!
