Planetary means relating to a planet or planets. A planet, as defined by the International Astronomical Union (IAU is a celestial body Orbiting a Star or stellar remnant that is It can also refer to:

• Planetary (comics), a DC comic book series by Warren Ellis and John Cassaday
• Planetary habitability, the measure of an astronomical body's potential to develop and sustain life
• Planetary nebula, an astronomical object
• Epicyclic gearing (planetary gearing), an automotive transmission technology
• Planetary Radio, a public radio show about space exploration, produced by The Planetary Society
• The Planetary Society, the Earth's largest space interest group

Planetary is an American Comic book series created by Warren Ellis (writer and John Cassaday (artist published by the Wildstorm Planetary habitability is the measure of a Planet 's or a Natural satellite 's potential to develop and sustain Life. A planetary nebula is an Emission nebula consisting of a glowing shell of Gas and plasma formed by certain types of Stars when they die Epicyclic gearing or planetary gearing is a Gear system that consists of one or more outer gears or planet gears revolving about a central or Planetary Radio is a weekly 30-minute Radio show devoted to Space exploration and Astronomy, hosted and produced by Mat Kaplan and The Planetary The Planetary Society is a large publicly supported non-government and not-for-profit organization that has many research projects related to Astronomy. The Planetary Society is a large publicly supported non-government and not-for-profit organization that has many research projects related to Astronomy.

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