Supernova 3D!

Astronomers have imaged a supernova (Cassiopeia A) using light echoes, light from the supernova that bounces off the surrounding intersteller dust. Using these light echoes has allowed the scientists to reconstruct the explosion of the star in three dimensions. This 3D imaging has revealed that some regions of the supernova blast traveled 15 million kilometers per hour faster than others, giving it an uneven appearance.

The story link: http://news.sciencemag.org/sciencenow/2010/03/scienceshot-supernovaenow-in-3-d.html