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Atmosphere

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"I'm pretty sure his armor doesn't make him vacuum proof. Let's ditch the atmosphere."
Perla to Han Solo, while Boba Fett is hanging onto the outside of the Millennium Falcon[src]
Alderaan-TOR
The planet Alderaan had a Type I breathable atmosphere.

An atmosphere was a collection of gases that surrounded a celestial body that possessed sufficient mass, and therefore sufficient gravity to hold it. Examples included many planets, moons, and large asteroids. Almost all species in the galaxy needed some form of atmosphere to breathe. During the height of the Galactic Empire's colonial period, a system of classification for atmospheres was established. This system, which was afterward adopted by nearly all subsequent governments in the galaxy, separates atmospheres into four distinct categories:

Type I atmospheresEdit

Breathable

TheVoidofAbafar
The planet Abafar had a curious atmosphere which concealed the sun, rendering the entire sky bright orange.

Type I atmospheres had appropriate levels of oxygen, nitrogen, and hydrogen to be breathable by the majority of species in the galaxy. Some contaminants or other trace gases could have had long-term detrimental effects. Planets with these types of atmospheres almost always had some form of indigenous life. Plant life or some analog that frees oxygen was present on all planets with a Type I atmosphere—all oxygen in the atmosphere would have been bound to other elements within a matter of months without such life to free it up.

Type II atmospheresEdit

Luke Ben Baran Do
Luke and Ben Skywalker wear breath masks while visiting the Baran Do on the planet Dorin.

Breath mask Suggested

Type II atmospheres usually had appropriate levels of atmospheric oxygen and nitrogen. Due to lack of sufficient pressure or the presence of contaminants and/or of other trace gases, however, these atmospheres usually caused detrimental effects to Humans and most other species over a shorter period of time. Many species could breathe Type II atmospheres without any trouble depending on physiology. Planets with a Type II atmosphere usually supported some form of indigenous life.

Type III atmospheresEdit

Breath mask Required

Within Type III atmospheres, due to either the lack of appropriate levels of atmospheric oxygen, nitrogen, sufficient pressure, the presence of contaminants and/or of trace gases, a breath mask had to be worn. For Humans and most other species, these atmospheres caused immediate or eventual impediments or even incapacitation. Some species could breathe these types of atmospheres depending on physiology, and biology. Planets with a Type III atmosphere sometimes supported native life.

Type IV atmospheresEdit

Environment Suit Required

Zaynespacesuit
Zayne Carrick in a space suit on the Rogue Moon.

Type IV atmospheres were either toxic, flammable or nonexistent; these types of atmospheres caused immediate incapacitation or death in most species of the galaxy. Few species could breathe in this type of atmosphere; planets with a Type IV atmosphere rarely support life.

Other usesEdit

The word "atmosphere" was also used to represent the capacity of a starship to hold a determined atmosphere in its decks. A broken hull could produce a sudden loss of atmosphere (called "decompression").[1]

AppearancesEdit

I find your lack of faith disturbing

I find your lack of sources disturbing.

This article needs to be provided with more sources and/or appearances to conform to a higher standard of article quality.

Technically, atmospheres appear in most Star Wars works. The following is a list of media in which atmospheres are specifically mentioned:

SourcesEdit

Notes and referencesEdit

External linksEdit

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