I'm a top astrobiologist – here's why I am convinced aliens DID live on Mars…and they could have been smarter than us
Published: Invalid Date,
ASTRONAUTS visiting Mars could unearth a museum of alien fossils that may have belonged to an intelligent civilisation.
Professor Chandra Wickramasinghe backed NASA 's plan to send humans to Mars in the 2030s and Elon Musk's bid to colonise the planet.
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The Buckingham Centre for Astrobiology astrobiologist thinks alien life 'unquestionably' existed on the Red Planet.
And he's even suggested explorers could unearth fossils pointing to alien life, possibly more intelligent than us.
Prof Wickramasinghe told The Sun: 'I think it is entirely plausible that Mars, sometime in the past, was a green planet full of life.
'Then something happened that made it a virtually dead planet or nearly a dead planet.
'This could have happened after impact. An episode of comet asteroid impacts could have destroyed all life that existed on it if it did exist on Mars. It could have destroyed it just as on the Earth.
'If there was a huge protracted episode of asteroid comet impacts, then this planet would be a dead planet.
'The fact that Mars and Earth are very similar, geologically very similar, have seasons and they have very similar patterns of oscillation of temperature and so on makes it entirely possible that, in the past, Mars was the home of life.
'I don't rule out intelligent life.
He added: 'I think astronauts will explore all those fossils discussed by Barry DiGregorio, examine them more carefully and decide whether they're artifacts or real fossils.
'They would encounter bacteria and I think they would find a planet that is very easy to terraform, to make it a living planet like the earth.
Hidden ocean on Mars found that 'could cover entire planet with a mile of water' and 'should be able to sustain life'
'If you go with enough resources, you could build houses and build a civilisation on Mars, and I don't think that's impossible.
'I can't rule out an intelligent civilisation.'
Asked what that life may have looked like, he said: "It's speculation. It could have been as intelligent as you or I or maybe even more intelligent.
"Who knows? I think evidence has been virtually stamped out of existence possibly through an impact episode, if it did exist."
DiGregorio had claimed alien fossils had been discovered by NASA's Curiosity rover in 2018.
He accused NASA of failing to investigate properly so it could boost publicity for a manned mission to Mars.
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NASA said it believed the images likely showed signs of crystal growth, not alien fossils.
Billionaire Musk has long signalled his intent to colonise Mars through his SpaceX company.
Last year, the X owner even suggested humans could land there in four years and be living in a self-sustaining city in 20.
NASA says on its website it intends to send humans to Mars in the 1930s.
In 1976, NASA landed two Viking landers on Mars.
NASA scientist Gilbert Levin ran an experiment to test the soil and concluded there were positive signs of life through the presence of radioactive gas.
NASA and its other scientists disagreed, and separate experiments from Viking concluded the soil did not show signs of life.
But Levin spent the rest of his life claiming he'd found signs of alien life until his death in 2021.
Prof Wickramasinghe said: 'We have unquestionably found microbial life on Mars, the most secure discovery was the Gilbert Levin discovery in the 1970s when they did the Viking land experiments.'
NASA's mission to Mars
NASA hopes to send astronauts to Mars as early as the 2030s.
The space company has been working to advance its technologies in a bid to send a human crew to the Red Planet.
It would take astronauts up to nine months to reach Mars - which even at its closest is 33.9 million miles away.
Astronauts could then spend up to 500 days on the planet's surface before returning to Earth - which would take another nine months.
The crew would spend their time on the planet collecting data and assessing the planetary alignment that would allow the spacecraft to land and depart from Mars on the same orbit.
Last year, the agency completed a year-long simulated mission that saw four crew members out in a replica habitat in Houston, Texas.
They logged 378 days in the 1,700-square-foot, 3D-printed habitat called Mars Dune Alpha.
He added: 'That result was overwhelmingly positive. They got the result that they wanted.
'So almost immediately Levin, who I'd known for a long time, made the announcement on behalf of NASA that we have discovered life on Mars.
'This was a step too far for the NASA establishment, and they then revoked that statement.'
On its website, NASA says: "Mars remains our horizon goal for human exploration because it is one of the only other places we know where life may have existed in the solar system.
"What we learn about the Red Planet will tell us more about our Earth's past and future, and may help answer whether life exists beyond our home planet.
"Like the Moon, Mars is a rich destination for scientific discovery and a driver of technologies that will enable humans to travel and explore far from Earth."
Mars facts
Here's what you need to know about the red planet...
Mars is the fourth planet from the Sun
It is named after the Roman god of war
The landmass of Mars is very similar to Earth, but due to the difference in gravity, you could jump three times higher there than you can here.
Mars is mountainous and hosts the tallest mountain known in the Solar System called Olympus Mons, which is three times higher than Everest
Mars is considered the second most habitable planet after Earth.
It takes the planet 687 Earth days to orbit the Sun
The planet has a diameter of 4,212 miles, and has an average distance from Earth of 140 million miles
Martian temperatures can vary wildly, reaching as high as 70F/20C or as low as -225F/-153C
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