Martians could hold the key to travelling across the galaxy, NASA's chief scientist has claimed.
Humans are unable to live on other planets due to their extremely harsh environments.
But finding aliens could reveal new ways for humans to survive outside Earth and colonise the Milky Way, it has been claimed.
Dr James Green said this may allow astronauts to be genetically engineered to be able to live in the same environments they find ETs.
The physicist told the Gravity Assist podcast: "Whereas looking at this microbial life that's living and growing in an environment that is evolved completely different from ours, they have evolved mechanisms to be able to live in those harsh environments, things that we would like to know how they do that, and therefore how we might be able to do that, if we're able to crack that, if we're able to crack the concept of being able to live and grow using, using new changes in our DNA structure that maybe other life forms have really done, then we can go anywhere in the galaxy we want to, I mean, it just opens up everything!"
Nobel Prize winner Dr Michel Mayor has bet the Daily Star £50 NASA's latest mission to Mars will bring back ETs to Earth.
He hailed the hunt for life on the Red Planet as "absolutely fantastic" in July.
This mission is being planned for the 2030s.
But warned the mission could bring back alien bacteria that might even destroy the world.
Milky Way 'full of dead aliens' wiped out by own science and technology, experts claim
He said: "Covid-2031… this is a real concern.
"Maybe the risk is very low but the consequences could be very big, so I believe you have to be very careful."
The US space agency's Perseverance rover is set to touch down in the Jezero Crater in February next year after a six-month journey.
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