Earth's atmosphere stretches out to the moon – and beyond

The gaseous layer that wraps around Earth reaches up to 630,000 kilometers away, or 50 times the diameter of our planet, according to a new study based on observations by the ESA/NASA Solar and Heliospheric Observatory, SOHO, ...

Scientists say space aliens could hack our planet

With all the news stories these days about computer hacking, it probably comes as no surprise that someone is worried about hackers from outer space. Yes, there are now scientists who fret that space aliens might send messages ...

'Star Trek' actor Shatner sends message to Voyager

NASA announced the winner Tuesday of a contest to send a message to the Voyager spacecraft which launched 40 years ago on a historic mission to explore the outer planets.

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