Three astronauts have returned safely from the International Space Station. The successful landing in Kazakhstan brings to a close one of the longest experiments on human spaceflight in history.
Space travel sounds super, doesn't it? But do yourself a favor and know what you're getting into. That's advice from astronomer, Neil F. Comins. He's written a timely guide for would-be Mars and moon colonists.
As well as delivering supplies to the International Space Station (ISS), the vessel has a device that will remove space junk in orbit. The launch was made more urgent by the failure of a Russian supply rocket last week.
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