I installed Celestia and there is a wealth of information and add-ons regarding astronomy. I was messing with it last night and found some information I never knew about; like the NEA/NEO (Near Earth Asteriods/Near Earth Objects and the International scientists studying the potential for any impact scenarios that could prove to be hazardous to life on Earth. If for nothing else but the educational value, it is well worth the download. Thanks SamTherapy! PS: The models used are .3ds models and most of the textures are .png or .jpg images. I would bet that they could be imported into Poser and used as props as well.