New evidence suggests giant asteroid impacts created Earth’s continents
We are on such a Goldilocks planet it isn’t even funny. Or life is so exquisitely tuned to optimize for earth’s conditions it isn’t even funny. Or both.<p>We see magnetic fields this strong on gas giants, but not on inner planets. I wonder too if we will find that some asteroid impacts and the formation of the moon didn’t goose up the magnetic flux of the core while they were at it. Maybe habitable zones only appear on tortured worlds, like earth and some of the moons of a Jupiter, because normal planets are just too boring, don’t have enough building blocks for life.