TRAPPIST-1 Planets Discovery Explained: What Are Exoplanets, and Is There Life?

Is anyone out there? Seven possibly life-sustaining, Earth-size planets were discovered revolving around tiny star TRAPPIST-1, according to a new study published in the journal Nature on Wednesday, February 22.
The solar system is just 39 light-years away from our own system, which, in the grand scale ofThis article originally appeared on www.usmagazine.com: TRAPPIST-1 Planets Discovery Explained: What Are Exoplanets, and Is There Life?