The Galaxy Zoo
"Welcome to Galaxy Zoo, where you can help astronomers explore the Universe.
The Galaxy Zoo files contain almost a quarter of a million galaxies which have been imaged with a camera attached to a robotic telescope the Sloan Digital Sky Survey, no less). In order to understand how these galaxies and our own formed, we need your help to classify them according to their shapes a task at which your brain is better than even the fastest computer.
More than 150,000 people have taken part in Galaxy Zoo so far, producing a wealth of valuable data and sending telescopes on Earth and in space chasing after their discoveries."
(Bonus picture of Hanny's Voorwerp:
Mark A. Holmes