Exploding stars and faraway galaxies are now just a mouse click away through Sky in Google Earth. The program is modeled after Google Earth, which allows you to tour our planet. With Sky in Google Earth, you can travel across the vastness of the night sky, making tour stops at all the popular Hubble images. Though these celestial objects are far away from Earth, you can reach them in a few seconds with Sky in Google Earth. This new, free, downloadable browser is produced by Google through a partnership with the Space Telescope Science Institute in Baltimore, the science operations center for the Hubble Space Telescope.
Google: Sky in Google Earth Information and free download