A planet needs more than location in a habitable zone. It needs the right ingredients, and salt has a surprising role.
In combination, the factors mentioned here and in my last two posts constrain the “cosmic habitable age” to narrower dimensions.
What can we infer about the cause of the universe, about what brought it into being?
Perhaps the publisher, Cambridge University Press, thought the title might help sales with a younger, hipper generation.
The stability of atoms, stars, and people depends on finely tuned physical laws and constants in the local universe. But are they fixed throughout space and time?