... M90 has an active nucleus. It is noteworthy in that M90 has a blueshift with respect to the Milky Way, even though it is located at a distance of 40 Million light years from us. This is because M90 is a member of the Virgo Cluster and its random velocity due to the gravitational potential well of Virgo is larger than its relative expansion velocity with respect to the Milky Way. That random component is accidentally pointed in our direction such that M90 has a velocity of about -250 km/s. ...