The Solar System
The Sun, eight planets, moons, dwarf planets, asteroids and comets form one gravitationally connected system.
Central starThe Sun contains almost all of the Solar System’s mass and supplies light and heat.
Planet familiesRocky planets dominate the inner region; giant planets dominate the outer region.
Small bodiesAsteroids, comets and trans-Neptunian objects preserve information about early formation.
Orbital architectureOrbits record the effects of gravity, resonances, migration and collisions.