Astrobiology Offers Crucial Window Onto Earth’s Distant Past And Future

This artist's concept shows what the TRAPPIST-1 planetary system may look like, based on available data about the planets' diameters, masses and distances from the host star, as of February 2018. NASA/JPL-Caltech

The search for extrasolar rocky planets circling other stars is more than mere science. It offers researchers a chance to gain crucial insight into how our own planet functions.

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