BuyUranus.com: An extraterrestrial real estate company offering title to a 1-square mile piece of Uranus.
Crystal Nebulae: Offers three-dimensional sculptures of astronomical objects.
Moon Land: Offering one acre parcels of land on the Moon with deed, map, and mineral rights.
Moon Property: Offers deeds for lunar properties.
MoonEstates: Offers lunar land parcels as well as moon-themed mugs, t-shirts, and baseball caps.
Planetary Investment: Offering moon property deeds.
Stardatecards: Laser transmission of customized messages into space.