Why hasn't anyone invented cheap space probes? Some kind of thing that could be sent up en mass to gather just base data we don't have on all the planets/moons/etc . . .? [more inside]
posted by [insert clever name here] on Aug 18, 2007 - 34 answers

The "heated probes" on the outside of airplanes - the ones that you're not supposed to step on - what are they for? Why are they heated? [more inside]
posted by scblackman on Mar 14, 2007 - 4 answers