Planetary missions leave the Earth's gravitational field to perform up close observations of other planets, asteroiods, and comets. These types of missions can range from quick flybys to long term observations from orbits around the body. Planetary missions have also dropped probes into planets' atmospheres, soft and hard landed (i.e., crashed) on planets' surfaces, and flown in formation with comets and asteroids.
Planetary is an American comic book series created by Warren Ellis (writer) and John Cassaday (artist), published by the Wildstorm imprint of DC Comics. Planetary also refers to the group portrayed in the series.