Planets

Studying planets reveals how worlds form, move, change, and sometimes become places where life may be possible. These posts look at planets in our solar system and beyond, including their orbits, atmospheres, moons, gravity, surfaces, rings, magnetic fields, and internal structure. From rocky worlds like Earth and Mars to gas giants, ice giants, dwarf planets, and distant exoplanets, this category follows the science of planetary systems and the question of how common Earth-like worlds may be in the universe.