This page lists all the planets that appear in Marvel Comics.
A-Chiltar III is a marshy planet (60% marsh, 40% prairie), and the atmosphere has a very high methane content. It is the home of the A-Chiltarians.
Archernon is a planet that is the home of the Archernonians. Presently, the planet is at a pre-Industrial level of technology. Its government is dictatorial. Achernon is a rocky world, 60% covered in volcanic rock with an atmosphere possessing a high sulfur content.
Aedi is a planet that is the home of the Aedians. A radioactive ore found on this planet can be used to cure the Hlavic Virus.
Aerie is the alleged home world of the Shi'ar. It is unknown if this planet still exists.
Alpha Centauri is a star system in the Centuarus constellation. Yondu is from this world.
Ankara is a planet that is the home of the Sligs.
Annoval 14 is a prison planet that is the toughest penal colony in the universe.
Arago-7 is the seventh planet from the star Arago. It is the home of the Pheragots.
Archeopia is a planet that is the home of the Archeopians. Archeopia was destroyed when Galactus first awoke and devoured it.
Arcturus IV is the fourth planet orbiting the star Arcturus where Arcturans are from.
Ardent Spring is a planet in the Shi'ar Empire that was destroyed by the Uncreated.
Argor is a planet that is the home of the Argorans.
Arima is the home to a humanoid race of Alpha Centaurians.
Ariston is a planet that is the home of the Aris.