M87 An Enigmatic Giant Elliptical Galaxy

Messier 87 is an enormous elliptical galaxy in the direction of the constellation Virgo.  For decades astronomers have been fascinated by a powerful jet of material spewing outward from the core of the galaxy.  More recently, Hubble Space Telescope imaging provided astronomers with some of the best evidence yet for the existence of super-massive black holes in the centers of galaxies.  It is safe to say that M87 will fascinate astronomers for decades to come.