RE: Seven temperate terrestrial planets around the nearby ultracool dwarf star TRAPPIST-1
February 25, 2017 at 1:26 am
Guys, can we use gravity to slow down from those speeds?
No God, No fear.
Know God, Know fear.
Know God, Know fear.
Seven temperate terrestrial planets around the nearby ultracool dwarf star TRAPPIST-1
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