M 9 (NGC 6333) is a
globular cluster located in the contellation Ophiuchus. It was discovered
by Charles Messier in 1764. He described it as a "nebula without
stars." William Herschel later determined that this object
M 107 lies approximately
21,000 light years away and has a diameter of 80 light years. It
contains 100,000 stars, many of them being variable stars. This
globular cluster is relatively close to us as these objects reside
in the halo around our galaxy. They
contain some of the oldest known stars.
Some dark nebulae are
visible in the foreground.