TRAPPIST-1
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TRAPPIST-1 is a red dwarf star with seven known exoplanets. It lies in the constellation Aquarius approximately 40.66 light-years away from Earth. An ultra-cool dwarf, it has a surface temperature of
True-colour illustration of the Sun (left) next to TRAPPIST-1 (right). TRAPPIST-1 is darker, redder and smaller than the Sun.
Comparison of the orbits of the TRAPPIST-1 planets with the Solar System and Jupiter's moons
Relative sizes, densities and illumination of the TRAPPIST-1 system compared to the inner planets of the Solar System
Habitable zones of TRAPPIST-1 and the Solar System. The displayed planetary surfaces are speculative.
TRAPPIST-1d
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TRAPPIST-1d is a small exoplanet, which orbits on the inner edge of the habitable zone of the ultra-cool red dwarf star TRAPPIST-1, located 40.7 light-years away from Earth in the constellation of Aqu
TRAPPIST-1
…placement allowed the planets to be detected: when they pass in front of the star, its apparent magnitude dims. Up to four of the planets—designated d, e, f, and g—orbit at distances where temperatures are likely suitable for the existence of liquid water, and are thus potentially hospitable to life…
Artist's impression of TRAPPIST-1d (August 2025)
Artist's impression of the TRAPPIST-1 planetary system.
PDS 70
Distant galaxy GN z 11 in GOODS N image by HST