CAMBRIDGE, Mass., July 25 (UPI) -- Astronomers say they turned to Internet "crowd sourcing," using thousands of posted pictures of a comet that passed Earth in 2007 to reconstruct its orbit.
A team of astronomers used a Yahoo! search to find images of Comet Homes, then combined them to determine the comet's orbit in three dimensions, proving data provided by an large but unwitting group of participants can advance scientific knowledge.