i'm not mike
there are no aliens that have gone near earth, and they probably never will, at least not before our sun dies out we'll have to look for them ourselves, and the best we'll find is probably some boring cellular organisms such as bacteria

Matthew R
Their is very likely life on other planets and it is possible that there is intelligent life out their capable of space travel however the odds of us having been visited is vanishingly small. A good guideline when looking for pictures of aliens is that if someone claims it contains an image of an outer space alien then it is either a fake or it has been misinterpreted

I guess I'm a Fairy
Yes, aliens exist. They are able to travel through time through what we call worm holes which allow them to travel, lets say.....5 hours which in real time would be 5 years. They know the secrets of our universe and the technology to do this. That is how they are able to visit our planet. We, humans, don't know how to do this yet so it would take us more than a lifetime to travel to some of the stars and planets because they are so far away. Zillions of them.

MrWizard
demons...

Spiritual Paradigm Shift
As for what we have been conditioned to call “aliens”, they are actually called the unholy "watchers" or "sons of God". Ancient antediluvian depictions of them before their imprisonment [2 Peter 2:4 / Jude 6]: Recent sighting, after Phil Schneider and the boys dug them up [Amos 9:2]: The "suicided" hero that went to his grave thinking that he had dug up "aliens" that wreaked of brimstone (sulfur): You can read more about the unholy watchers in Genesis 6 and the books of Enoch, Jasher, and Jubilees. They do plan on pretending to be "aliens" soon as told of in 2 Thessalonians 2:9-12 All this just in time for 2012. Billions will buy it. Will you? JUST DO NOT EVER ACCEPT THIS:

Ross W
i think aliens exist, because if u beleive in God why would he only creat us. and also if u beleive in evolution why wouldnt the same thing happen on different life sustaining planets. as for those pics there fake because then it would be official that aliens exist