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

How NASA Works

When most people think of NASA, they think of astronauts and Kennedy Space Center, but there's much more to this nearly 50-year-old organization. Learn about the history of NASA, how its structured and exactly what it does.

How is GPS used in spaceflight?

GPS would be the logical navigation choice for spaceflight, if its range weren't so limited. Is there another GPS-type option for spaceflight? See more »

10 Offbeat Things Humans Have Launched Into Space

Humans have sent a variety of items into space, from movie memorabilia to sporting goods. Learn about 10 offbeat items that have launched into space. See more »

How is oxygen made aboard a spacecraft?

Oxygen made aboard a spacecraft is done through the use of oxygen generators. Learn about oxygen made aboard a spacecraft. See more »

How is carbon dioxide eliminated aboard a spacecraft?

To get carbon dioxide eliminated aboard a spacecraft you need a system similar to SCUBA. Learn about carbon dioxide elimination. See more »

Can you make your own homemade spacecraft?

Making your own homemade spacecraft sounds pretty neat, right? Learn more about making homemade spacecraft in this article. See more »

How do humans age in space?

Do humans age in space differently than here on Earth? Find out how humans age in space in this article from HowStuffWorks. See more »

Top 10 Moments in Space Bathroom History

Top 10 moments in space bathroom history are explained in this article. Learn about the top 10 moments in space bathroom history. See more »

5 Memorable NASA Mission Videos

5 memorable NASA mission videos are presented in this article. Check out these 5 memorable NASA mission videos. See more »

Spaced Out: Space Shuttle Quiz

Do you know the history and technology behind space shuttles? Test your knowledge by taking this quiz at HowStuffWorks. See more »

Are there military space stations out there?

Military space stations were of extreme interest to the U.S. and the Soviet Union in the 1950s and 1960s. Learn about military space stations. See more »