Do Not Disturb
Monday, May 30, 2011: Spiral galaxy Messier 90, in the constellation Virgo, displays obvious interaction with the nearby smaller gallery. The galaxy's core has moved from the center of the disk, and the spiral arms show strong disturbances in several places.
Tuesday, May 31, 2011: This Hubble photo shows globular cluster Terzan 5, which possesses an exceptionally dense core. As a result, scientists think that it has one of the highest stellar collision rates for a globular cluster. While packed in at such close quarters, many stars push so close together that they form tight binary systems.