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Hubble Spies Globular Cluster in Neighboring Galaxy

Globular Cluster Mayall II in the Neighboring Andromeda Galaxy (M31)
Hubble Space Telescope has captured a view of a globular cluster called G1, a large, bright ball of light in the center of the photograph consisting of at least 300,000 old stars. G1, also known as Mayall II, orbits the Andromeda galaxy (M31), the nearest major spiral galaxy to...

The Hubble telescope has captured a view of a globular cluster called G1, a large, bright ball of light in the center of the photograph.

G1, also known as Mayall II, orbits the Andromeda galaxy (M31), the nearest major spiral galaxy to our Milky Way. Located 130,000 light-years from Andromeda's center, G1 is the brightest globular cluster in the Local Group of galaxies, containing at least 300,000 old stars. The Local Group consists of about 20 nearby galaxies, including the Milky Way.

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Last Updated
Mar 20, 2025
Contact
Media

Claire Andreoli
NASA’s Goddard Space Flight Center
Greenbelt, Maryland
claire.andreoli@nasa.gov

Credits

Michael Rich, Kenneth Mighell, and James D. Neill (Columbia University), and Wendy Freedman (Carnegie Observatories) and NASA