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What if we’re all just Martians?

The scientific concept that life could organically spread from one planet to another is called panspermia, and it’s not nearly as wild as it might sound. We already know that rocks from Mars have made it to Earth because we’ve found them here, but if ancient Mars did host life, what are the odds that life on Earth is a direct result of life forms being yanked from Mars and sent speeding toward Earth?

The events that would lead to a planet like Mars sending life to Earth are actually very straightforward. A strong impact from an asteroid hitting the surface of a life-rich Mars could send rocks into space. Some of those rocks could eventually find themselves on a collision course with Earth and, if those rocks hold microbial life, those tiny life forms could potentially survive an impact on Earth, thus seeding our planet with life.

What if we’re all just Martians?

Tags: Discovery, Environment, Evolution, Humanity, Life, Perception, Space, Study

Filed under: Health/Food

13-Feb-2021

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