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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.

Extraterrestrial life


It is also called alien life, or, if it is a sentient and/or relatively complex individual, ... Although many scientists expect extraterrestrial life to exist, so far no .... existed on Mars in the ...

Top 5 Scientific Claims for Alien Life | Search for Aliens ... - Space.com


Sep 20, 2013 ... Scientists have claimed to find evidence for extraterrestrial life in microbes on meteorites ... Credit: Hoover/Journal of CosmologyFor as long as we can remember, humans .... existence is not a fact.we cannot prove existence.

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


Oct 6, 2014 ... Aliens exist: Dragon particle proof of life on other planets ... from earth, there is no way that anything of this size can get to that height from Earth.

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


May 24, 2014 ... Aliens Exist And Will Be Found Pretty Soon, Say Scientists ... for this level of confidence among Astrobiologists like Shostak can be credited to ...

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


With so many stars in the universe, science suggests we may not be alone ... to the search for E.T. As kids stumble out of the theater, they might ask, do aliens exist? ... Shostak notes that there is no direct proof for any life beyond Earth, but the ... "Life can adapt to really tough conditions and, of course, most of the unive...

Greatest Mysteries: Does Alien Life Exist? - LiveScience


Life can be found in almost every nook and cranny of our planet Earth. ... at any other time in history, scientists are optimistic that extraterrestrial life does exist, and that .... So yeah Alien can't exist, I gave you reasons why, now prove me wrong.

Mysterious metal globe 'may be proof aliens are watching us and ...


Feb 16, 2015 ... Space seed: Microscopic particle could point to existence of intelligent extra- terrestrial life. Scientists in the UK say this microscopic metal globe could be proof ... “Unless of course we can find details of the civilisation that is ...

The 12 most compelling scientific findings that suggest aliens are real


Sep 26, 2015 ... Earlier this year, a team of scientists estimated that about 4.5 billion years ago at least one-fifth of Mars was covered in an ocean more than 450 ...

Do any aliens exist? - UCSB Science Line - University of California ...


Now, why have we not found any aliens or evidence of their existence? ... Because science only works with observations, we can never prove there is no other ...

Popular Q&A
Q: Can Science Prove Aliens Exist?
A: Many people have asked if science would ever be able to prove that aliens exist. The answer is that if aliens do exist then science "should" technically be able... Read More »
Source: ezinearticles.com
Q: Can science prove the existence of a supernatural power?
A: No. Science can't. dis. prove it either. It can't be tested. by applying the scientific method. Read More »
Source: wiki.answers.com
Q: Can science prove God exists?
A: There are many scientific theories for God but none are proven. If they were, everybody would know God was real! Read More »
Source: www.chacha.com
Q: Can science prove the existence of God?
A: This article was published on guardian.co.uk at 07.21 EST on Thursday 16 December 2004 . It was last modified at 07.21 EST on Thursday 5 January 2006 . It was f... Read More »
Source: www.guardian.co.uk
Q: But has anyone ever proven that time exists? By that I mean can s...
A: "Proof" is a mathematical construction where theorems are shown to logically follow from assumptions.  Physics does not do "Proofs"  Physics collects evidence a... Read More »
Source: www.quora.com