PIA23870: Measuring the Masses and Diameters of the TRAPPIST-1 Planets
Scientists now know the density of the seven TRAPPIST-1 planets with a higher precision than any other planets in the universe, other than those in our own solar system.
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Measuring the mass and diameter of a planet reveals its density, which can give scientists clues about its composition. Scientists now know the density of the seven TRAPPIST-1 planets with a higher precision than any other planets in the universe, other than those in our own solar system.

Image Credit:
NASA/JPL-Caltech

Image Addition Date:
2021-01-22