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NASA's Greeting to Aliens Has Been Floating in Space for 40 Years
If extraterrestrial life encounters the Voyager space probes, they would be greeted by a series of Golden Records programmed by NASA in 1977 to explain the story of Earth.
Breaking down Elon Musk’s most “painful” year yet04:00
A mysterious particle from a distant galaxy made its way to an observatory in Antarctica01:12
Cheetah 3 is a blind robot that doesn’t need sensors to navigate01:16
'The Meg': Is the terrifying prehistoric shark from Jason Statham's new movie real?03:24
The human factor: What it will take to build the perfect team for traveling to Mars07:42
Touching the sun: NASA solar probe to go where no spacecraft has gone before01:51