Since the gravity of a planetary body in Mass Effect, s, is given as a proportion of Earth's, a = sg. According to Newton's Law of Universal Gravitation, the mass of any body, M, is ar 2G -1, where a is gravity, r the radius, and G the gravitational constant. Isaac Newton's gravitational constant is 6.67×10 -11 m 3kg -1s -2 which would be 6.67×10 -20 km 3kg -1s -2 when dimensioned for kilometers. From these, it is possible to derive the mass (and density) for any planet with a surface gravity. 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). These worlds are known to exist in the Milky Way galaxy, but their locations are not specified via the Galaxy Map. These planets are the homeworlds of some of Andromeda's known intelligent races. Sur'Kesh, the homeworld of the salarians.Khar'shan, the homeworld of the batarians.These planets are the homeworlds of some of Milky Way's known intelligent races. For the comic series, see Mass Effect: Homeworlds.

There are even asteroids containing valuable metals or other objects hidden in the belts. Many planets can be scanned from space for minerals or other collectibles, but not landed upon. Most often this will be a planet, but it may be a moon or starship instead. Within each planetary system, there will usually only be one location to land / dock. Travel from planet to planet requires use of the Galaxy Map. Every planet has a unique infographic, but most of them cannot be interacted with. Planets may have natural satellites ( moons) and may or may not be inhabited. They are of many different sizes and compositions. Planets are massive celestial bodies that orbit a star or stellar remnant.

Mass effect 1 maps