this post was submitted on 15 Mar 2026
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[–] Sausa@lemmy.blahaj.zone 9 points 23 hours ago

Here's the wikipedia page for the theory, which makes for a pretty cool read: https://en.wikipedia.org/wiki/Giant-impact_hypothesis

Some cool stuff:

  • The other body was a mars-sized protoplanet called Theia.
  • According to computer simulations, remnants of Theia could be still visible inside the Earth as two giant anomalies of the Earth's mantle.
  • By examining isotope ratios in lunar samples from the Apollo missions, we can see the moon and earth likely had a common origin.