A protogalaxy in the Milky Way may be our galaxy's original nucleus

Millions of ancient stars spanning about 18,000 light-years at the Milky Way’s heart are the kernel around which the galaxy grew, researchers say.

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A protogalaxy in the Milky Way may be our galaxy's original nucleus

Galaxies and the Universe - A Question and Answer Guide to Astronomy

IAL 28: Galaxies

Protogalaxy in the Milky Way May Be Our Galaxy's Nucleus

The puzzle of the galaxy with no dark matter

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Size Matters: Astronomers Discover Rare, 'Super Spiral' Galaxies

Gaia Finds The Protogalaxy That Became The Milky Way's Heart