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Questions regarding Callisto, an icy moon of Jupiter.
Questions regarding chthonians, a hypothesised class of exoplanets that are the remnant cores of hot Jupiters.
Questions related to Kuiper Belt Objects that exist in an annulus from 30AU to approximately 50AU from the Earth's Sun.
a star with an enormous mass and luminosity, showing signs of a very high rate of mass loss.
Questions about the region of space around a star where a planet can sustain life.
Tag for questions asking if fictional ideas are possible or correct