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Science | Space | Spaceflight

Spaceflight covers topics related to human presence in outer space. Learn about weightlessness, astronauts and space tourism in this section.

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What is it like to sleep in space?

When there are 16 sunsets every day, getting some shut-eye becomes a bit of an issue. Do astronauts get through it with some warm milk as they float?


 How long can a human survive in outer space?

How long can a human survive in outer space? In science fiction movies, this seems to be an area of much creative license, with some people exploding instantly, and others surviving for nearly a minute without long-term ill effect. I read once that one's blood would boil, but I read elsewhere that this isn't true. So what is it? See more »

How do I become an astronaut?

 How do I become an astronaut?

How do I become an astronaut? See more »

How Space Suits Work

 How Space Suits Work

Spacesuits are incredible devices that allow astronauts to work safely in outer space. Learn how spacesuits work and about the history of spacesuits. See more »

How Space Tourism Works

 How Space Tourism Works

The space tourism industry offers people a way to take the ultimate vacation. Learn about space tourism and find out how you can become a space tourist. See more »

How does going to the bathroom in space work?

 How does going to the bathroom in space work?

A bathroom in space requires unique engineering that is different from a bathroom on Earth. Learn about the features of a bathroom in space. See more »