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Questions regarding the Sombrero Galaxy, also known as M104 or NGC 4594. It is an unbarred spiral galaxy, part of the Virgo constellation.
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Questions regarding a theoretical 'tunnel' through spacetime which could potentially allow time travel.
any minor planet in the Solar System that orbits the Sun at a greater average distance (semi-major axis) than Neptune.
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.
A clockwork device that produces a small scale model of the orbits of objects in the solar system
Tag for questions asking if fictional ideas are possible or correct
about the lack of evidence for alien life, despite the growing evidence that suitable planets are reasonably plentiful.
Questions related to Kuiper Belt Objects that exist in an annulus from 30AU to approximately 50AU from the Earth's Sun.