I read about Stellarium in MacUser, downloaded it and... Well, I love it. It's great fun. I'd love it more if it could display further information, like a planetary encyclopaedia.<BR><BR>For example, when I'm viewing Mercury, I'd like to be able to bring up a window containing known information about Mercury. Atmospheric composition, density, temperatures, wind speed. What rock Mercury is made of. What missions there have been to the planet. The whole nine yards.<BR><BR>A rudimentary 'google earth' type feature would be nice, so that I could 'stand' on the planet - but that's of tertiary importance compared with the further information aspect.<BR><BR>Nice work though - Stellarium is awesome!