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Planets

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Planets are massive celestial bodies that orbit a star or stellar remnant. They are of many different sizes and compositions. Planets may have natural satellites (moons) and may or may not be inhabited. Every planet has a unique blurb, but most of them cannot be interacted with. Travel from planet to planet requires use of the Galaxy Map.

Within each planetary system, there will usually only be one location to land / dock. Most often this will be a planet, but it may be a moon or starship instead. Many planets can be scanned from space for minerals or other collectibles, but not landed upon. There are even asteroids containing valuable metals or other objects hidden in the belts.

Main article: Mass Effect System Guide

For an alphabetical list of planets see Category:Planets (or the Planet Index).

Mass EffectEdit

Argos Rho Edit

Asteroid belt
Asteroid belt

Armstrong Nebula Edit

Asteroid belt
Asteroid belt
Asteroid belt

Artemis Tau Edit

Asteroid belt
Asteroid belt
Asteroid belt
Asteroid belt
Asteroid belt
Asteroid belt

Attican Beta Edit

Exodus Cluster Edit

Gemini Sigma Edit

Asteroid belt

Hades Gamma Edit

Asteroid belt
Asteroid belt
Asteroid belt
Asteroid belt
Asteroid belt

Hawking Eta Edit

Asteroid belt
Verr

Horse Head Nebula Edit

Asteroid belt

Kepler Verge Edit

Asteroid belt

Local Cluster Edit

Earth (Luna)
Asteroid belt

Maroon Sea Edit

Asteroid belt
Asteroid belt
Asteroid belt
Asteroid belt

Pangaea Expanse Edit

Sentry Omega Edit

Serpent Nebula Edit

Asteroid belt

Styx Theta Edit

Asteroid belt
Asteroid belt

Voyager Cluster Edit

Asteroid belt
Asteroid belt

Mass Effect 2Edit

Caleston Rift Edit

Asteroid belt
Asteroid belt

Crescent Nebula Edit

Asteroid belt
Asteroid belt

Eagle Nebula Edit

Asteroid belt
Asteroid belt
Asteroid belt

Far Rim Edit

Asteroid belt

Hades Nexus Edit

Asteroid belt

Hawking Eta Edit

Asteroid belt
Verr

Hourglass Nebula Edit

Asteroid belt

Ismar Frontier Edit

Faia

Krogan DMZ Edit

Asteroid belt

Local Cluster Edit

Earth (Luna)
Asteroid belt

Minos Wasteland Edit

Nubian Expanse Edit

Omega Nebula Edit

Asteroid belt
Asteroid belt

Pylos Nebula Edit

Asteroid belt

Rosetta Nebula Edit

Serpent Nebula Edit

Asteroid belt

Shadow Sea Edit

Sigurd's Cradle Edit

Mil
Asteroid belt

The Phoenix Massing Edit

The Shrike Abyssal Edit

Thal
Asteroid belt
Asteroid belt

Titan Nebula Edit

Vallhallan Threshold Edit

Asteroid belt
Asteroid belt

Viper Nebula Edit

Asteroid belt

Mass Effect 3Edit

Aethon Cluster Edit

Asteroid belt
Asteroid belt

Annos Basin Edit

Asteroid belt

Apien Crest Edit

Arcturus Stream Edit

Asteroid belt

Argos Rho Edit

Asteroid belt
Asteroid belt

Athena Nebula Edit

Asteroid belt
Asteroid belt
Asteroid belt

Attican Beta Edit

Caleston Rift Edit

Asteroid belt
Asteroid belt

Crescent Nebula Edit

Asteroid belt
Asteroid belt

Exodus Cluster Edit

Far Rim Edit

Asteroid belt

Gemini Sigma Edit

Asteroid belt

Hades Gamma Edit

Asteroid belt
Asteroid belt
Asteroid belt
Asteroid belt
Asteroid belt

Hades Nexus Edit

Asteroid belt

Horse Head Nebula Edit

Asteroid belt

Hourglass Nebula Edit

Asteroid belt

Ismar Frontier Edit

Faia

Kepler Verge Edit

Asteroid belt

Kite's Nest Edit

Asteroid belt
Asteroid belt
Asteroid belt
Asteroid belt
Asteroid belt

Krogan DMZ Edit

Asteroid belt

Local Cluster Edit

Earth (Luna)
Asteroid belt

Minos Wasteland Edit

Nimbus Cluster Edit

Ninmah Cluster Edit

Asteroid belt
Asteroid belt

Nubian Expanse Edit

Perseus Veil Edit

Asteroid belt

Petra Nebula Edit

Asteroid belt

Pylos Nebula Edit

Asteroid belt

Serpent Nebula Edit

Asteroid belt

Shadow Sea Edit

Sigurd's Cradle Edit

Mil
Asteroid belt

Silean Nebula Edit

Asteroid belt
Asteroid belt
Asteroid belt

The Shrike Abyssal Edit

Thal
Asteroid belt
Asteroid belt

Vallhallan Threshold Edit

Asteroid belt
Asteroid belt


Homeworlds Edit

"Homeworlds" redirects here. For the comic series, see Mass Effect: Homeworlds.

These worlds are the homeworlds of some of the Milky Way galaxy's known intelligent races.

Other Worlds Edit

These worlds are known to exist in the Milky Way galaxy, but their locations are not specified via the Galaxy Map.

Properties Edit

Mass Effect provides the radius of planets (in kilometers), and for planets with a solid surface it further provides the surface gravity (as a proportion of Earth's surface gravity). From these, it is possible to derive the mass (and density) for any planet with a surface gravity.

Isaac Newton's gravitational constant is 6.67×10-11 m3kg-1s-2 which would be 6.67×10-20 km3kg-1s-2 when dimensioned for kilometers. Earth's surface gravity, g, is 9.81 ms-2, which is 9.81×10-3 kms-2. According to Newton's Law of Universal Gravitation, the mass of any body, M, is ar2G-1, where a is gravity, r the radius, and G the gravitational constant. Since the gravity of a planetary body in Mass Effect, s, is given as a proportion of Earth's, a = sg. Therefore, given values for s (dimensionless) and r (in km), and given that the mass of the Earth is 5.9736×1024 kg, the mass of a planet will be:

\begin{align}
M &= \dfrac{a r^2}{G} \quad = \dfrac{s g r^2}{G} \quad 
  = \dfrac{s \cdot 9.81 \cdot 10^{-3} \cdot r^2}{6.674 \cdot 10^{-20}} \; \mbox{kg} \\
  &= {1.46 \times 10^{17} \cdot s \cdot r^2} \; \mbox{kg} \\
  &= {2.44 \times 10^{-8} \cdot s \cdot r^2} \; \mbox{Earth Masses} 
\end{align}

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