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Credit & Copyright: Anglo-Australian Telescope
Board
Explanation:
The globular cluster
M5, pictured above, contains
roughly 100,000 stars.
These stars formed together and are gravitationally bound. Stars orbit the
center of the cluster, and the cluster orbits the center of our Galaxy. So
far, about 160
globular clusters
are known to exist in a roughly spherical halo around the
Galactic center.
Globular clusters
do not appear spherically distributed as viewed from the Earth, and this
fact was a key point in the determination that our
Sun is
not at the center of our
Galaxy. Globular clusters are very old. There is a straightforward
method
of determining their age, and this provides a very interesting lower limit
on the age of our universe of about 14 billion years.
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NASA Web Site Statements, Warnings, and Disclaimers
NASA Official: Jay Norris. Specific rights apply.
A service of: LHEA at NASA / GSFC
& Michigan Tech. U.
Based on Astronomy Picture
Of the Day
Publications with keywords: M 5 - globular cluster
Publications with words: M 5 - globular cluster
See also:
- APOD: 2025 December 28 Á NGC 1898: Globular Cluster in the Large Magellanic Cloud
- APOD: 2025 November 26 Á Globular Cluster M15 Deep Field
- APOD: 2025 September 5 Á 47 Tucanae: Globular Star Cluster
- APOD: 2025 August 14 Á M13: The Great Globular Cluster in Hercules
- APOD: 2025 July 26 Á Globular Cluster Omega Centauri
- NGC6366 vs 47 Ophiuchi
- Messier 2