An audacious claim

[mmcirvin]

These people have a proposed history of the solar system that they claim explains, among other things, the Late Heavy Bombardment just under four billion years ago that produced the dark "seas" on the Moon (and probably other giant impact craters such as the Caloris Basin on Mercury and Hellas Basin on Mars). It involves changes in the orbits of the giant planets causing a storm of rogue planetesimals.

Microbial life may have been first emerging on Earth around this time. It's an open question how it got through; some of the impacts may have been enough to boil the oceans. These days, though, we know that there are living things deep down inside the crust...

Comments

[twillis.livejournal.com]

This is all wrong. The LHB was caused by illegal dumping by a passing freighter.