Do aliens live among us?!?, do aliens live among us?!?!? [creepymusic] Options

[Warlord]

do any of you think aliens exist from what i can gather LOTS of people claim to have seen a UFO
http://www.mt.net/~watcher/carorbTH.jpg
this pic could be anything really because the darn blob is so small but still could it actually be one
http://www.alexnolan.net/articles/&ufo6.jpg
... now this pic is just stupid to me
that could be just a disk someones tossed in the sky for their dog to catch it or something

but you decide in the poll

[Clazzy]

1.) Silicium atoms may work under certain conditions. And those conditions may be:

2.) A universe with completelly different laws of physics. Black holes change reality and we don't know what else does. So there is the probability of a universe with Iron based lifeforms.

Black holes don't change reality. Black holes distort space-time like all gravitational fields, just on a stronger level. Everything seems strange in and around black holes but they mostly comply with general relativity. Once you go inside a black hole the theories start rising, and we'll probably never understand the fundamentals of their interior.
With a different universe, it could well be possible but that could be said about anything. There would be a different value for pi, the speed of light, Planck's constant, everything. The amount of matter in the universe would be different, the mass and charge of electrons may be different so there's no point talking about something we can't visualise (I certainly can't get my head around a different value of pi anyway).