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solar system
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star system
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galaxy
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cluster (or group) of galaxies
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supercluster
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universe
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observable universe
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Sun and everything that orbits it (planets, dwarf planets, sssbs, etc.). Refers to our own star system and others
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Star(s) and any planets and other materials that orbit it
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Great gathering of stars all held together by gravity and orbiting a common center (contains from a few hundred million to a trillion)
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Collection of galaxies bound together by gravity. Small ones (few dozen) are groups, while larger ones are clusters
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Gigantic region of space packed closely together with galaxies, galaxy groups, and galaxy clusters
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Sum total of all matter and energy (all galaxies+everything between them)
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Portion of entire universe that can be seen from Earth (at least in principle)
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Our Solar System ("Sol")
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Our Solar System ("Sol")
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Milky Way
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Local Group
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Local Supercluster
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Cheatography n. The art of mapping complex subjects into clear, instantly navigable reference guides.
