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Andromeda Galaxy
Andromeda, or M31, is the Milky Way’s nearest major spiral-galaxy neighbour, a Local Group member roughly 2.5 million light-years away.
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Galaxies
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Milky Way
The Milky Way is our home galaxy, a spiral galaxy with a stellar disk spanning more than 100,000 light-years.
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Andromeda Galaxy
Andromeda, or M31, is the Milky Way’s nearest major spiral-galaxy neighbour, a Local Group member roughly 2.5 million light-years away.
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Galaxies in evolution: what NASA’s public overview confirms
NASA explains that galaxies are still assembling and points to observable examples of collisions and mergers. Andromeda and the Milky Way belong...