cassiopeia a

Anyone seen a supernova remnant lately?

This page shows you a 3D model of the supernova remnant Cassiopeia A. You can not only twist and turn the picture to see it from all angles, but can also view some animations and…


3D-ing around a supernova remnant

One of the most famous objects in the sky – the Cassiopeia A supernova remnant – will be on display like never before, thanks to NASA’s Chandra X-ray Observatory and a new project from the…