drabbas astronauter av jetlag?

Hi. My name is Jason and I'm from Taiwan. My question is: is there jet lag in outer space?

Jason, that's a great question. You know, think about people getting jetlag. They travel east, they travel west, they get through a lot of different time zones.

You know, you're going to bed three hours earlier than you're supposed to. And jet lag can be a big problem for folks here on Earth. Now, in outer space, it's an even bigger problem because we actually rotate around the Earth once every 90 minutes.

So jetlag is so extreme that we don't even call it jetlag up there. We just know that you're going to be in a different cycle. The way we combat that is we make sure that we structure our day much the same as you would structure a day down here on Earth.

We try to schedule about seven to eight hours of sleep and about 16 to 17 hours of wake time. During that time, when you're going to sleep, it's very hard to sleep. If you were just laying there like you normally do in your bed at home and you had every 90 minutes daylight and darkness, and daylight and darkness, and daylight and darkness, you can imagine you wouldn't sleep very well.

So what we do is we shade all the windows to make it very, very dark, and we can actually, we take sleep kits with us and they're like these masks you put over your eyes so you can't see anything. We put earplugs in our ears and you get a sleeping bag that actually ties you to the wall.

You can put your arms around yourself and kind of curl up and, and, and be attached to the wall, and that helps us sleep at night. And we stay in that same schedule within an hour or two for the entire space flight.