Simulation of a hit-and-run collision of Theia and proto-Earth (IMAGE)

University of Arizona

Simulation of a hit-and-run collision of Theia and proto-Earth

Caption

The moon is thought to be the aftermath of a giant impact. According to a new theory, there were two giant impacts in a row, separated by about one million years, involving a Mars-sized 'Theia' and proto-Earth. In this image, the proposed hit-and-run collision is simulated in 3D, shown about an hour after impact. A cut-away view shows the iron cores. Theia (or most of it) barely escapes, so a follow-on collision is likely.

Credit

A. Emsenhuber/University of Bern/University of Munich

Usage Restrictions

This visual may only be used for the purpose of posting and/or reporting of this news release. Credit information must be provided as indicated.

License

Original content

Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.