Proof that there is life on Mars could appear in 20 years, although aliens could find us first, an astrophysicist has said.

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According to astrophysicist Sarah Cruddas, decades of exploration of Mars (the Red Planet) by unmanned probes could bear fruit.
Scientists have revealed that organic molecules found on Mars are "consistent with early life," a tantalizing clue in the hunt for alien life in our Solar System.
NASA believes that ancient Mars was similar to Earth and was once much "wetter and warmer.".
"It's possible we're not alone in the universe," Cruddas told the Daily Star on Sunday.
"We know that Mars was warmer and wetter, as were the conditions for microbial life, which are single-celled organisms. We just haven't been able to prove it yet."
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"Whether it's microbial life or something unexplained, it hasn't been seen yet."
"But once we have an answer, we can then calculate it to figure out how much life might actually be out there."
But the scientist said we should also be prepared for a visit from aliens.
"We shouldn't rule out that extraterrestrial life will discover us first. It may have already discovered us."
"Alien civilizations may be much more advanced than us, so it's possible they'll find us before we find them."

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A robot landed on Mars in a search for alien life in early 2021.
The US space agency's Perseverance rover has finally arrived on the Red Planet after an incredible seven-month journey.
Dr. Becky McCauley Rench of the US space agency explains why she believes Mars was once much "wetter and warmer.".
The rover, nicknamed Percy, drills into the planet's surface to collect core samples and store them in titanium tubes.
These tubes will then remain there until 2028, when a recovery vessel is scheduled to transport them back to Earth.
Source of information: nypost.com
