TRAPPIST – 1 d – Scientists discovered Trappist – 1 way back in 1999. But it was only in 2016 that they discovered its surrounding exoplanets. This star system is only 40 light-years away from the Earth. Some data suggest that this planet may possess a ring of water around its terminator or the line, which demarcates the chilly night side and the warm day side of the planet. TRAPPIST – 1 f – Revolving around TRAPPIST – 1, this planet takes 9.4 Earth days to do so and weighs .68 times of the Earth.
TRAPPIST – 1 e – It is the fourth one out of the TRAPPIST – 1 exoplanets as well as the second one within the habitable zone. In 2018, a paper was published, which suggests that this planet may have an iron core like the Earth and, thus, may possess a protective magnetosphere. TRAPPIST – 1 g – It is the largest TRAPPIST – 1 exoplanet, as well as the sixth from TRAPPIST – 1. It is thought to possess an atmosphere that is not rich in hydrogen. That means that it has evolved over a period of millions of years. Also, this means that it may be a rocky body, just like its TRAPPIST – 1 neighbors.