Once, I worked on a project about detecting some 2d geometric shapes on images that are taken from an airplane. My project's main purpose was detecting tank-like shapes and estimating their possible locations. Actually, it was very fun.
You may find this interesting. The mother of all supernova's!
Wow, just wow. Yes, these are the kinds of topics that I really interested in. And especially, this is a damn interesting news. Thanks for the link.