Phillae approaching, landing on, riding on, and drilling the Rosetta comet. My first concern was that we would wobble it out of its normal trajectory and somehow increase the likelihood it would impact Earth. But now I’m thinking, for all we now, that comet could be a lifeform, or contain lifeforms inside of it. Or, was it built or launched by sentient beings with unknown intentions? We’ve found organic molecules on it (
http://online.wsj.com/articles/rosetta-p...omet-1416256078).
What attention are we attracting to our planet, by putting our space junk on it? It's like a billboard saying "Come to Earth!" for anyone that might exist to detect and read it.
There is at least one website promoting the bogus-sounding rumor that the real reason for the mission is that radio signals emitted from a transmittor located on the comet were detected by scientists decades ago. I'm at least 9% less nutty than those dudes.