Many conspiracy theorists are, however, certain alien life exists all throughout the Universe.
Some conspiracists will go as far as to claim NASA and the world’s governments already know the answer to the question of are we alone in the universe.
In 2007, NASA was confronted by a person accusing NASA of ignoring the possibility intelligent life is not unique to Earth.
The person posted a question to NASA’s Lunar Science Institute (NLSI), now the Solar System Exploration Research Virtual Institute (SSERVI).
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“Perhaps what is confusing you is the concept of “belief” in intelligent life.
“Science is not a matter of belief, but of evidence.
“In everyday life all people hold ‘beliefs’, but this is not a good word to apply to our scientific understanding of nature.”
Another person also asked the space agency: “Do you believe that aliens exist?”
Brad Bailey, an NLSI staff scientist, said: “I suppose I’m curious as to your definition of ‘aliens’ and whether you include all life (as we know it) or just ‘intelligent’ life.
“But between research by SETI, analysis of Martian meteorites, recent findings of methane within the Mars atmosphere and other similar studies, there is no current evidence for life elsewhere, intelligent or otherwise.
“However: I, personally, remain optimistic and while ‘believe’ is a strong word, I feel as though Jodie Foster’s character Ellie Arroway said it best in the movie Contact (1997) – ‘I’ll tell you one thing about the universe, though. The universe is a pretty big place. It’s bigger than anything anyone has ever dreamed of before. So if it’s just us… seems like an awful waste of space.'”
Later this month NASA will launch its Mars 2020 Perseverance rover.
The primary goal of the mission is to collect and analyse samples of Martian life for signs of ancient life.