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Measuring the Masses and Diameters of the TRAPPIST-1 Planets
Ssc2021 02a

Credit: NASA/JPL-Caltech/R. Hurt (IPAC)

Artwork • January 28th, 2021 • ssc2021-02a

ssc2021-02a

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

About the Object

Name
TRAPPIST-1
Type
Planet > Type > Terrestrial
Star > Spectral Type > M
Distance
40 Light Years