... P2010 A2: Unusual Asteroid Tail Implies Powerful Collision . ... What is this strange object? First discovered on ground based LINEAR images on January 6, the object appeared unusual enough to investigate further with the Hubble Space Telescope last week. ... Mars and a Colorful Lunar Fog Bow . ... Mars, on the far upper left, is the brightest object in the above picture. Shepherd Moon Prometheus from Cassini . ... Mars is at opposition tonight, opposite the Sun in planet Earth's sky. ...