It's Carl Sagan's birthday today. Here's a little prototype Jason and I have been playing with (requires the free Unity Web Player plugin for your browser). Credits Planet images: Copyright (c) by James Hastings-Trew. http://planetpixelemporium.com/planets.html Backgrounds: Public domain by NASA and STScI via http://hubblesite.org/gallery/album/entire NASA/courtesy of nasaimages.org. http://www.nasaimages.org/
