 Here we have the Perseus galaxy cluster containing thousands of galaxies immersed in a vast cloud of hot gas. It's moving away from us at over 5,000 km per second. That's almost 2,000 miles per second. Inside this galaxy cluster, Hubble discovered a very old and rare galaxy moving through the cluster at 3.2 million km per hour, that's 2 million miles per hour. It is thought that NGC 1277 has remained essentially unchanged for the past 10 billion years. The evidence that this is the case lies in the ancient globular star clusters that swarm around it. Massive galaxies like this one tend to have both newer blue and older red globular clusters. Red ones are believed to have formed as the galaxy formed. Blue ones are brought in later as the galaxy merges with others. However, NGC 1277 is almost entirely lacking in blue globular clusters. One explanation says, because of its speed of transit through the cluster, it cannot merge with other galaxies to collect the stars and pull in the gas to fuel star formation.