Planetary surface in TRAPPIST-1 system, illustration

Planetary surface in TRAPPIST-1 system, illustration

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Caption: Planetary surface in TRAPPIST-1 system. Illustration of ice and liquid water on the surface of one of the planets of the ultra-cool dwarf star TRAPPIST-1, with one of the inner planets seen in transit across the disc of its parent star (upper centre). A third planet is at upper right. TRAPPIST-1 is Jupiter-sized, and its planets are Earth-sized with several in a habitable zone for life. These three planets were discovered in 2015, with four more planets discovered in 2017, with a total of three planets in the habitable zone. This system has been studied using NASA's Spitzer Space Telescope (SST) and the ground-based TRAPPIST (Transiting Planets and Planetesimals Small Telescope). TRAPPIST-1 is 39 light years from Earth, in the constellation of Aquarius. This image was published in 2016.

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Keywords: 2015, 2016, 2017, 2mass j23062928-0502285, aquarius, artwork, astronomical, astronomy, astrophysical, astrophysics, atmosphere, cold, dwarf star, exoplanet, extrasolar planet, frozen, habitable zone, ice, illustration, life, liquid water, no-one, nobody, orbit, orbiting, planet, planetary science, planetary system, planets, space, spitzer space telescope, sst, star, stellar system, surface, transit, transiting, transiting planets and planetesimals small telescope, transits, trappist 1, trappist-1, trappist-1b, trappist-1c, trappist-1d, trappist-1e, trappist-1f, trappist-1g, trappist-1h, ultra-cool dwarf star, universe

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