Mysterious Feature Spotted on Vesta Asteroid

This movie shows surface details beginning to resolve as NASA's Dawn spacecraft closes in on the giant asteroid Vesta. The framing camera aboard NASA's Dawn spacecraft obtained the images used for this animation on June 1, 2011, from a distance of about 300,000 miles. A mysterious feature roughly 60 miles in diameter (moving from left to right across the field of view) was snapped by NASA's Dawn spacecraft on its approach to the massive asteroid. More from the BBC, Space.com,and USA Today.