More or less the opposite of xenzag's "Hey - that's me", the parasat is an umbrella for privacy conscious nude sunbathers. Sooner or later, Satellite/aerial imagery on the web will reach sufficient resolution to make individual people recognizable. The parasat would allow UV rays to penetrate while blocking visible light. As a bonus, it could be printed with the emoticon or rude gesture of one's choice.-- saxman, Jan 02 2008 december 2007 corrects this to AA battery at 1500 km http://www.sciam.co...arks-electric-sense [beanangel, Jan 02 2008] Only if Sergei Brin is watching.-- saxman, Jan 02 2008 I thought this was going to be a parasitic satellite. Maybe a tiny, cheap satellite that tracked a larger one, then docked with it magnetically. It could sit on top of the main satellite's radiator, using the waste heat-flux to power itself thermoelectrically. By aligning it's own antenna with that of the main satellite, it would never have to perform any corrective maneuvers itself - it would therefore need no onboard propellant apart from that needed to get it into position initially.-- MaxwellBuchanan, Jan 02 2008 Sombrero ?-- 8th of 7, Jan 02 2008 Read "Fiasco" by Stanislaw Lem.-- saxman, Jan 03 2008 //if like sharks they see farther than current technology// Hold on - where did that gem come from? Do you mean to say that, rather than putting Hubble up there, we could just have opted for a large aquarium and a hammerhead?-- MaxwellBuchanan, Jan 03 2008 other: general - there's a Q missing somewhere-- po, Jan 03 2008 random, halfbakery