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There is no known evidence for the existence of extraterrestrial life forms similar to humans, but many theorize that they exist.
A new microorganism recently discovered by NASA, which is able to thrive and reproduce using the toxic chemical arsenic, gives more plausibility to the theory that other planets might sustain life.

Proof aliens exist: Scientists make staggering discovery find ...

THIS astonishing image is the long-awaited proof that alien life DOES exist, scientists ... from our planet - and so must have originated elsewhere in the universe.

Six signs that aliens might exist - Technology & science - Space ...

With so many stars in the universe, science suggests we may not be alone ... search for E.T. As kids stumble out of the theater, they might ask, do aliens exist?

Greatest Mysteries: Does Alien Life Exist? - LiveScience

Whether a similar bounty of life exists elsewhere in the universe is one of the oldest .... That aside, why do you think aliens are more advanced than us? maybe  ...

Aliens Exist And Will Be Found Pretty Soon, Say Scientists - Forbes

May 24, 2014 ... Aliens Exist And Will Be Found Pretty Soon, Say Scientists ... if you asked an astronomer if there was intelligent life elsewhere in the universe, ... funded to the level necessary to do the comprehensive search required to find ...

Do Aliens Exist? Yes, And Some 'Look Just Like Us,' Says Paul ...

Jan 7, 2014 ... Paul Hellyer, the 90-year-old former Canadian defense minister, claims there are more than 80 different species of aliens and some "look just ...

Aliens do exist and they look like HUMANS, claims Cambridge ...

Jul 1, 2015 ... If aliens do exist they probably look like HUMANS: Life on other ... It is inevitable that alien life on other Earth-like planets in the universe would.

If Aliens Exist,They May Come to Get Us, Stephen Hawking Says

Apr 26, 2010 ... If intelligent alien life forms do exist, they might not be the friendly ... in the science television series "Into the Universe with Stephen Hawking."

Alien life forms do exist: Space scientist says there could be four ...

Jul 2, 2012 ... Alien life is probably not little green men but I do believe complex intelligent ... PA "Island universe" captured by the Hubble Space Telescope.

Do Aliens Exist? If So, Will They Kill Us? : Discovery News

Apr 26, 2010 ... In a new Discovery Channel documentary "Into the Universe with Stephen Hawking", the world-famous physicist goes on the record about his ...

Popular Q&A
Q: Do aliens excist in the universe?
A: i'm only 10 yrs old. and i'm very interest to aliens i need some information about this do aliens excist in the world or anywhere? who say that aliens are real?... Read More »
Q: Do aliens exist in the universe?
A: It's possible, but no reliable evidence of them has ever been observed. Numerous people over the years have claimed to have seen aliens, and many of them believ... Read More »
Q: Do ALIENS exist in this universe?
A: I believe so. The universe is constantly expanding, we most deffinetly can't be the only ones. The universe is an extremely vast place. Also, don't even get me ... Read More »
Q: Do aliens exist in the universe?
A: I don't know about Roswell, but there must be other life (only "alien" if they're here on earth!) out there somewhere. Just our galaxy is monstrous beyond compr... Read More »
Q: Do Aliens exist? Are we alone in the universe?
A: First of all I'm certain there are no government cover ups, all governments have secrets for national security purposes, as soon as you make something secret yo... Read More »