This is an open cluster in located pretty close to the stinger of the
constellation. This open cluster has been known for a very long
time, records show it was recorded by Ptolemy, a Greek-Roman astronomer
in the 1st Century, more specific 130 AD. Messier recorded it as the
7th member of his list.
There are about 80 stars within the field of view making up this
cluster, they are approx 960 light-years from earth, and diameter of
some 25 light-years. M7 is thought to be about 200 million years
old. As you can see, it is in our Milky Way.