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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The Shelton family from Texas sent their first bouquet in 1998 after the Challenger disaster. And they haven't stopped since.

By John Donovan

We know space is awash in ultraviolet radiation. So how are astronauts protected from all those UV rays?

By Mark Mancini

Launching a rocket into space takes all types of precision and physics. And knowing the exact time to get the launch right is a science in itself.

By Mark Mancini

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The countdown begins to send Elon Musk's most powerful rocket beyond Earth's atmosphere. Whether it will be a success is anybody's guess.

By John Donovan