Astronomers find TRAPPIST-1 star system with multiple Earth-like planets

By Marcus Strom
Updated February 28 2017 - 11:18am, first published February 23 2017 - 8:34am
Top row: TRAPPIST-1 planetary orbital periods, distances from their star, radii and masses as compared to those of Earth. The bottom row shows data about Mercury, Venus, Earth and Mars. Photo: NASA/JPL
Top row: TRAPPIST-1 planetary orbital periods, distances from their star, radii and masses as compared to those of Earth. The bottom row shows data about Mercury, Venus, Earth and Mars. Photo: NASA/JPL
An artist's conception of the view from the fifth planet of the TRAPPIST-1 system. Photo: NASA/JPL
An artist's conception of the view from the fifth planet of the TRAPPIST-1 system. Photo: NASA/JPL
An artist's impression of the TRAPPIST-1 planetary system based on available data about their diameters. Photo: NASA/JPL
An artist's impression of the TRAPPIST-1 planetary system based on available data about their diameters. Photo: NASA/JPL

 

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