M15 globular cluster core

This picture shows the central region of the globular cluster M15 as imaged by the Planetary Camera of the Hubble Space Telescope. M15 is a tightly bound cluster of about a million stars contained within our own galaxy. At the center of the image, the density of stars is roughly a million times what it is in our own part of the galaxy. Analysis of this image shows that M15 is now recovering from an implosion in which the stars in the cluster center collapsed into a dense aggregate. This image has been processed to remove the effects of spherical aberration. At the distance of M15, the region shown is 2.26 light years on a side.


About the Image

NASA press release
NASA caption
Release date:16 January 1991, 06:00
Size:2554 x 2388 px

About the Object

Name:M 15, Messier 15, NGC 7078
Type:Milky Way : Star : Grouping : Cluster : Globular
Distance:3500 light years
Category:Star Clusters

Image Formats

Large JPEG
1.5 MB
Screensize JPEG
215.3 KB


Position (RA):21 29 58.43
Position (Dec):12° 9' 56.90"
Field of view:0.18 x 0.17 arcminutes
Orientation:North is 288.7° right of vertical

Colours & filters

Ultraviolet Hubble Space Telescope

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