Star Clusters

Find here the 15 brightest star clusters you can see without any special equipment. Observing deep-sky objects is easier than you think!

Image Archive

A different astronomy and space science related image is featured each day, along with a brief explanation.

This star-studded image from NASA's Hubble Space Telescope depicts globular cluster NGC 6717, which lies more than 20,000 light-years from Earth in the constellation Sagittarius. Globular clusters are roughly spherical collections of stars tightly bound together by gravity. The bright foreground stars at the center of the image reside between Earth and the cluster, and are distinguished by the crisscross diffraction spikes that form when their light interacts with the structures supporting…

Once in a while we peer into the heavens and show you a photograph that even the richest and most gifted of photographers can't match. And that's the case

The Pleides Star Cluster Taurus

The Ghost Nebula (Sh2-136) is a reflection nebula located in the constellation Cepheus. This object lies very close to the star cluster known as NGC 7023, and the Iris Nebula.

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Unlike most globular clusters, Ruprecht 106 may be what astronomers call a single population globular cluster.