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A clockwork device that produces a small scale model of the orbits of objects in the solar system
Questions regarding a theoretical 'tunnel' through spacetime which could potentially allow time travel.
A map of the surface features of something.
Questions regarding Triton, the largest moon of Neptune.
Questions about Trojan Asteroids, asteroids that co-orbit major planets.
Questions about flow regime in astrophysical gas characterized by chaotic properties.
about the lack of evidence for alien life, despite the growing evidence that suitable planets are reasonably plentiful.
Questions regarding chthonians, a hypothesised class of exoplanets that are the remnant cores of hot Jupiters.
Questions regarding Callisto, an icy moon of Jupiter.
the group of galaxies that includes the Milky Way among others.
Questions related to Kuiper Belt Objects that exist in an annulus from 30AU to approximately 50AU from the Earth's Sun.