How The Ancient Greeks Proved Earth Was Round Over 2,000 Years Ago

In the mid-20th century, we began launching satellites into space that would help us determine the exact circumference of the Earth: 40,030 ...

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Found After Two Years: �Lost Weather Balloon GoPro With Astounding Footage From Space�

In June 2014, 5 friends made the decision to go out into the Arizona desert and record footage of outer space with a GoPro recorder attached...

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Thank you, Bruce McCandless, for this iconic space photo

An astronaut floats alone with the blackness of space behind him and the bright blue limb of the Earth below.  He's untethered with noth...

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