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    Red Dwarf-icon.png TRAPPIST-1ball, also known as 2MASS J23062928–0502285ball, is an ultra-cool Red Dwarf-icon.png red dwarfball 40.5 light-years from Earth-icon.png Earthball in Aquarius. It has 7 planetballs, 3 of can into habitable. It is a place of interest for countryballs to move to when Earth-icon.png Earthball dies. It was discovered in 2000 and its planetballs were discovered across 2016 and 2017 by the TRAPPIST telescope in Chile-icon.png Chileball.

    A Kepler image of TRAPPIST-1

    Planetary system

    • TRAPPIST-1bball - It is a bit bigger than Earth-icon.png Earthball and orbits 0.01 AU from TRAPPIST-1ball. It could possibly have an atmosphere like Venus-icon.png Venusball or Mercury-icon.png Mercuryball. It could be tidally locked and battered by stellar wind. There is a chance it is an ocean of magma.
    • TRAPPIST-1cball - A tiny bit smaller than B but still bigger than Earth-icon.png Earthball. It orbits 0.015AU from TRAPPIST-1ball and shares nearly every feature with B.
    • TRAPPIST-1dball - It is around the size of Mars-icon.png Marsball and might also be tidally locked. It orbits 0.02AU from TRAPPIST-1ball. It might by beaten by stellar wind too. Water might exist on small parts of it.
    • TRAPPIST-1eball - It is slightly smaller than Earth-icon.png Earthball and could be habitable like it. It orbits 0.03AU from TRAPPIST-1ball. It is the most likely to have water and scored second-highest on Earthball Similarity Index for exoplanets.
    • TRAPPIST-1fball - It is a slightly smaller than TRAPPIST-1cball but bigger than Earth-icon.png Earthball. It orbits 0.04AU from TRAPPIST-1ball and is around the temperature of Mars-icon.png Marsball. It is probably too far away too be a water planetball but it could be an icy planetball being 50% frozen water.
    • TRAPPIST-1gball - It is the biggest in the system, a bit bigger than TRAPPIST-1bball. It orbits 0.05AU from TRAPPIST-1ball. It is likely to far away to have water so it might be a snowball planetball. However, gasses in its atmosphere might melt to ice into water.
    • TRAPPIST-1hball - It orbits 0.06AU from TRAPPIST-1ball and the smallest in the system, slightly smaller than TRAPPIST-1eball. It is also too far away for water and becoming a snowball. It could have a Titan-icon.png Titanball-like atmosphere that could melt water.
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