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The Wild Plan to Terraform Mars by Slamming Asteroids Into It
If future Mars colonizers want to survive without pressure suits, they’ll need to generate a denser atmosphere. One way to achieve this could be to bombard the Red Planet with water-rich asteroids.
Leszek Czechowski, a professor at the Institute of Geophysics of the Polish Academy of Sciences, has proposed how to convert the rusty-colored planet into a place where humans can walk without spacesuits. Every scientist exploring the terraforming of Mars comes to the same conclusion: There is simply not enough material on the planet to change its atmosphere, and any attempt to transport elements there represents an unprecedented energy expenditure. “The creation of an atmosphere that allows human life is possible by importing matter from other celestial bodies,” Czechowski explains in his paper, which he shared at the annual Lunar and Planetary Science Conference, LPSC 2025.
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