The constellation Virgo is the location of a
small and dim galaxy known as M84. It was originally thought to
be an elliptical galaxy. But more recent evidence suggests that
is it actually a face-on lenticular galaxy. Lenticular galaxies
are characterized by a disk shape with no conspicuous structure.
M84 is a member of a group of galaxies known as
Markarian's Chain, which
forms part of the Virgo Cluster. This galaxy was
the site of a supernova in 1957 and two others in 1980 and 1991.
It is located about 60 million light-years from Earth. With a
magnitude of only 9.3, it is best suited for viewing with a