This is a zoom into a simulated model of the globular star cluster Omega Centauri. All the stars appear to be moving in random directions, like a swarm of bees. Astronomers used Hubble's exquisite resolving power to measure positions for stars in 2002 and 2006. From these measurements, they can predict the stars' future movement, shown here for the next 10,000 years.
Publication: October 26, 2010