A great sequence from the folks running the Hubble space telescope — starting from a ground-based image of the globular star cluster Omega Centauri, then zooming in to a Hubble image of the cluster’s central regions. It wraps up with a simulation of the cluster’s stars’ motions:
The simulation is based on just two images taken by Hubble — in 2002 and 2006. But these were so accurate that the simulation can show the stars’ projected motions over the next 10,000 years. If your browser can’t handle Flash, you can see the video in HD here, or at a smaller size on the video’s press release page here.