This is a diagram of the structure seen around an active asteroid designated P/2013 P5. The Hubble Space Telescope photographed six finger-like dust tails in September 2013. One interpretation is that the asteroid's rotation rate has been increased to the point where dust is falling off the surface along the equator and escaping into space. The pressure of sunlight then sweeps the dust into long tails.
Image Type: Illustration
To access available information and downloadable versions of images in this news release, click on any of the images below: