Mars Was Nicer When It Rained Asteroids
The high heat and pressures of asteroid impacts in the early solar system could have made Mars more habitable.By Evan Thomas | April 5, 2016
Mars was nicer back when giant rocks were slamming into it on a regular basis.
Ancient asteroid and comet impacts once gave the planet a more habitable environment, according to a new study from University of Colorado.
Computer models show impacts could have produced enough heat and raised the atmospheric pressure enough to jump-start Mars' water cycle — and where there's heat and water, there are sometimes microbes.