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Great Andromeda Galaxy

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M31 in Andromeda 2.6 million LY

The Great Andromeda Galaxy

This is the Milky Way’s nearest large galactic neighbor.

With about 1 trillion stars, it is 2.5 to 5 times larger than the Milky Way galaxy.

Dark dust lanes surround the disk with pink patches of glowing hydrogen nebulosity

showing though, along with the blue glow of hot young stars.