Fine tuning
Researchers: If exoplanets are ocean planets, we won’t see ET
So fine tuning of the universe for life goes right down to the level of the atom?
Life is rare in the universe—IF there is no design
Are radioactive elements crucial for rocky planets?
The Privileged Planet, Redux
We’ve all heard about the fine-tuning of physical constants–just change them ever so slightly and a different kind of universe emerges. Then, there’s simply our location in our galaxy that allows us to see outwards to the galaxy itself, and beyond. Now, even the radioactivity in the earth’s core seems to be conducive to life. At Phys.Org there is a press release on this paper (behind paywall). “What they found is that if the radiogenic heating is more than the Earth’s, the planet can’t permanently sustain a dynamo, as Earth has done. That happens because most of the thorium and uranium end up in the mantle, and too much heat in the mantle acts as an insulator, preventing the molten Read More ›