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

What is a gimbal -- and what does it have to do with NASA?

Believe it or not, to get to space and back, NASA relies on a piece of technology that's been around for centuries. Just what is a gimbal, anyway?

How Astronauts Work

Astronauts are adventurers and scientists who work in space. Learn who astronauts are and what they do in space and on Earth. See more »

Why are there dozens of dead animals floating in space?

There are dozens of dead animals in space, but how did they get there? Find out why there are dead animals in space and what they contributed to space travel. See more »

How Space Junk Works

Space junk is the debris orbiting Earth, left behind by satellites and space shuttles. Find out how much space junk is up there and space junk dangers. See more »

Top 10 Space Conspiracy Theories

Space conspiracy theories feature hoaxes, government cover-ups and intelligent aliens. Check out our list of the top 10 space conspiracy theories. See more »

How do astronauts eat in space?

Astronauts eat in space with the help of special contraptions and carefully packaged food. Learn more about how astronauts eat in space. See more »

Is space tourism safe?

Is safe space tourism an oxymoron? The space tourism industry is taking off, and safety is becoming a concern. Learn all about safe space tourism. See more »

Can humans hear in space?

To hear in space involves several variables, including sound movement and environmental medium. Learn if humans hear in space. See more »

How Space Food Works

Space food for astronauts has come a long way since the flavorless paste that came in tubes. Learn about the development of space food. See more »

How could a hotel orbit the Earth?

A space hotel is currently under development by a European firm called Galactic Suite Limited. Learn about the development of the world's first space hotel. See more »

Neil Armstrong's 'one small step' signified a completely new achievement for humankind. Learn about the mission that put the first man on the moon. See more »