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Relation of Black Hole Mass to Cluster Mass

Relation of Black Hole Mass to Cluster Mass
  • Object Name
    Object NameA name or catalog number that astronomers use to identify an astronomical object.
    M15, M31 G1
  • Release Date
    September 17, 2002
  • Science Release
    Hubble Discovers Black Holes in Unexpected Places
    Read the release
  • Credits
    NASA and A. Feild (STScI)

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Related Images & Videos

Black Holes Unexpectedly Discovered in Globular Clusters M15 and G1

Black Holes Unexpectedly Discovered in Globular Clusters M15 and G1

These two globular star clusters, M15 and G1, harbor hundreds of thousands of stars. But deep within their dense cores is an unexpected guest: a class of intermediate-sized black holes. Black holes are invisible, but the probing eye of NASA's Hubble Space Telescope found them by...

Globular Cluster M15

Globular Cluster M15

Globular Cluster M31 G1

Globular Cluster M31 G1

Artist's View of a Black Hole in a Globular Cluster

Artist's View of a Black Hole in a Globular Cluster

Using Spectroscopy to Measure Velocity Dispersion

Using Spectroscopy to Measure Velocity Dispersion

Relative Location of M15 and M31 G1

Relative Location of M15 and M31 G1

Evidence for Existence of a Black Hole

Evidence for Existence of a Black Hole

Location of M15 and M31 G1 in the Northern Autumn Sky

Location of M15 and M31 G1 in the Northern Autumn Sky

Location of Globular Cluster G1 in Galaxy M31

Location of Globular Cluster G1 in Galaxy M31

Black Hole in a Globular Cluster

Black Hole in a Globular Cluster

Space Science Update: Hubble Discovers Black Holes in Unexpected Places

Space Science Update: Hubble Discovers Black Holes in Unexpected Places

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Details

Last Updated
Mar 14, 2025
Contact
Media

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

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