Google Sky allows internet users to view galaxies.
Google has launched 'Google Sky' enabling amateur star-gazers to view imagery sent by the Hubble Space Telescope from their PCs.
Packed with 100 million individual stars and 200 million galaxies, the new feature was a serious undertaking. The Google Earth Sky feature contains seven informative layers, including constellations, backyard astronomy showing objects within easy optical reach, Hubble imagery, the moon, planets, galaxies, and even "Life of a Star" tour.
Sky is not the first time Google has ventured into space. In March 2006, the company launched Google Mars which allows users to explore the surface of the Red Planet.
Another service, Google Moon, lets users view the sites of the Apollo moon landings. Both services use data from the US Space Agency NASA, with which Google signed an agreement in December 200