Top 10 Images Celebrating the Hubble Space Telescope's 30th Anniversary

The Hubble Space Telescope's image of the star V838 Monocerotis (V838 Mon) reveals dramatic changes in the illumination of surrounding dusty cloud structures. The effect, called a light echo, has been unveiling never-before-seen dust patterns ever since the star suddenly brightened for several weeks in early 2002. NASA/ESA/UPI