Twice as big in volume as the Earth, HD 40307g straddles the line between "Super-Earth" and "mini-Neptune" and scientists aren't sure if it has a rocky surface or one that's buried beneath thick ...

Art isn’t a stodgy thing that lives in museums. It lives in the minds of creative people. And there were some creative dreamers involved in this stuff. People who imagine a world where space travel is ...

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NASA occasionally releases travel posters featuring fictional, often retro representations of real-life places, ones located so far from our own planet that we'll likely never explore them during this ...

A new NASA video advertises a suite of its real-life missions as previewing an "Exoplanet Travel Bureau" of the future. When you purchase through links on our site, we may earn an affiliate commission ...