Hulk Smash Planets

Watch These Brutal Simulations of Apocalyptic Planetary Collisions

This is what'd happen if Earth crashed into another planet.

7. 21. 20 by Victor Tangermann
Jacob Kegerreis/Durham University
Image by Jacob Kegerreis/Durham University

A new series of fascinating supercomputer-rendered animations put together by a team of researchers at Durham University show what would happen to an Earth-like planet with a thin atmosphere if it collided with another object.

The research could shed new light on how planets — including our own Earth — may have evolved during the early days of our solar system.

Space.com‘s Steve Spaleta combined the animations together into a killer video with epic accompanying music.

“We know that planetary collisions can have a dramatic effect on a planet’s atmosphere, but this is the first time we’ve been able to study the wide varieties of these violent events in detail,” said Jacob Kegerreis, a researcher at Durham University and lead author of a paper about the research published in the Astrophysical Journal last week, in a statement.

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The simulations could help evaluate several hypotheses we have about the early evolution of nearby planets. In particular, it’s relevant to the prevailing theory that the formation of the Moon came about when planet about the size of Mars impacted with the Earth several billion years ago.

By analyzing the new simulations, the researchers found that a grazing impact, like the one hypothesized to have formed the Moon, led to much less atmosphere loss compared to a head-on collision.

A direct hit would’ve led to a complete obliteration of the atmosphere, taking some of the mantle with it. The findings indicate that the Earth probably only lost somewhere between ten and 50 percent of its atmosphere, depending on the kind of impact.

“In spite of the remarkably diverse consequences that can come from different impact angles and speeds, we’ve found a simple way to predict how much atmosphere would be lost,” Kegerreis said. “This lays the groundwork to be able to predict the atmospheric erosion from any giant impact, which would feed in to models of planet formation as a whole.”

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“This in turn will help us to understand both the Earth’s history as a habitable planet and the evolution of exoplanets around other stars,” he added.

READ MORE: Supercomputer reveals atmospheric impact of gigantic planetary collisions [Durham University]

More on planetary collisions: New Theory: Life on Earth Came From Impact With Another Planet


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