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Manager of NASA's Spitzer Science Center at Caltech/IPAC, Pasadena, California Sean Carey presents research findings during a TRAPPIST-1 planets briefing, Wednesday, Feb. 22, 2017 at NASA Headquarters in Washington. Researchers revealed the first known system of seven Earth-size planets around a single star called TRAPPIST-1. Photo Credit: (NASA/Bill Ingalls) More: ( )
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Keywords: bill, carey, dc, headquarters, ingalls, nasa, planetesimals, planets, sean, small, space, spitzer, telescope, transiting, trappist-1, usa, washington