An ancient planet smashed into Earth. We now know its origin

A collision between Earth and a massive Mars-sized protoplanet likely caused the formation of our moon. Now scientists from the Max Planck Institute suggest that doomed planet was likely a rowdy neighbor.

source https://www.dw.com/en/an-ancient-planet-smashed-into-earth-we-now-know-its-origin/a-74819362?maca=en-rss-en-ger-1023-rdf