TRAPPIST-1 system compared to Earth (February 2018)

TRAPPIST-1 system compared to Earth (February 2018)

TRAPPIST-1 system compared to Earth (February 2018). TRAPPIST-1 is an ultra-cool dwarf star, which is only about 9 percent as massive as our Sun. It is slightly larger than the planet Jupiter in size, but has much more mass. It is located 39.6 light-years (12.1 pc) from the Sun in the constellation Aquarius. It was discovered in 1999 and astronomers first discovered three Earth-sized planets orbiting the dwarf star in 2015. On 22 February 2017, astronomers announced four additional exoplanets around TRAPPIST-1, and three of them were in the habitable zone

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