Looking close to home
The deeper we look into space, the more places we come across that maybe, just maybe, could host life. From our neighboring planets to distant galaxies sending out weird signals, the list of spots in space worth checking out just continues to grow.
The closest worlds we should check for signs of life are those next door that we’ve already been to, or at least our robots have.
Originally published April 19, 2017.
Update, Sept. 16, 2020: Adds new slides.
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