i believe so because there are thousands of planets.im pretty sure one of them has aliens.

Considering the vast amount of space the universe has, I would say that there are aliens out there. We just haven't seen them because they must not have the advanced technology that we believe they have.

I believe to aliens cause someone would not say that they come from space and they are green and they flying in the sky for nothing he must have saw one !

Look up the theory of the Big Crunch, I don't think there are aliens alive now, but if the theory of the big crunch is true, Then there could have been billions of universes before us, surely at least one of these must have contained some other kind of life, even if it was just the kind of one-celled organisms we came from.

I'll give a brief explanation of why I believe what I do:

It is believed that the universe is 12 billion years old - correct me if I'm wrong

If the theory of the big crunch is correct then we can say that matter has been around for any number of universes before ours, lets say 1 billion to make this easy. 1 billion x 12 billion = 12k trillion, an organism could have been created on another planet on every millisecond of those 12k trillion years, it's highly improbable that it has never happened

@Iceage-
Aren't you confused with the Big Bang?
The Big Crunch theory is about one way the Universe could end.

why would you watch a ghost story when we're talking about aliens

1. Well the Fourth Kind is about interactions & abductions by aliens.

I know that but PARANORMAL activity? PARANORMAL means ghost >_>

I believe in aliens, I also believe that they have visited earth...look at all the greek myths and other myths/legends most of them are very similar... The Noahs Arc story was created way before The Bible and Christianity...I think they do have advanced tecknology and that they helped the greeks and stuff build pryamids, etc...how else can you explain 200 ton rocks being lifted up onto other 200 ton rocks Even in Native American legends they have myths about people from other worlds
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Think about this...flying gods??(greek myths,etc...) what if these "gods" werent gods...what if they were actually extraterrestrails with the power of flight and I think everyone has heard about Zuezes lightning bolt...what if Zues was an Alien and the lightning bolt was some kind of powerful weapon that started fires and shot out a ray sorta thing...the aliens in Greek views would be god like because of there weapons and power of flight...today this wouldnt seem god like but way back then the greeks, etc couldmve thought these "aliens" came from heaven and they called them gods...but really they came from outer space...

Aliens are beings that DO NOT walk among us, but DO EXIST somewhere in the universe. They could be thinking right now, "what if there are aliens out there." They could be humanoid! Anyway.....