The human brain is much better at recognising patterns than a computer can ever be. Any computer program we write to sort our galaxies into categories would do a reasonable job, but it would also inevitably throw out the unusual, the weird and the wonderful. To rescue these interesting systems which have a story to tell, we need you.
With a million galaxies to be classified, the team is hoping 20,000 to 30,000 volunteers will sign on. For more, see the BBC's coverage. Thanks to Karen for pointing this story out!