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AsteriaStar
Galactic dynamics

Galactic Archaeology

The reconstruction of how the Milky Way formed by reading the ages, chemistry, and motions of its stars, which preserve the imprint of their birth. Gaia's precise positions and velocities for over a billion stars have turned this into a precision science, revealing ancient mergers frozen into the halo.

Highlights

  • ›Reading the Galaxy's history in its stars

Galaxy, objects & concepts

Knowledge connections

Sources

The primary and reference sources this topic draws on.

  • ESOEuropean Southern Observatory

    Southern-hemisphere observatory data and imagery (VLT, ALMA partner).