I thoroughly enjoyed reading it, because it reminded me of why the planetary exploration game is worth it.
Understanding the planetary nitrogen cycle is critical to understanding the origin and evolution of life.
The observed constraints imply that either planets form very rapidly, or that planetary systems will be relatively rare.
Here, a planetary system consisting of one star and two identical-mass planets in circular but mutually inclined orbits is considered.
For moderate surface pressures, some of these particles can reach the planetary surface.
A large planetary oxygen surface sink is therefore necessary, in contrast with escape to space.
The book is broad in scope, bringing in such aspects as the constraints of seismic topography, and mantle convection in other planetary bodies.
He knew a great deal about theories of planetary motion.
