Earth
Earth, or Terra, is the third planet from the Sun, and the main population center of the NS Solar System. It has one natural satellite, called the Moon, or Luna.
There are many different realities, dimensions, versions and conceptions of Earth within the NS multiverse. None of them is necessarily the "right" one. Since it is not physically possible for thousands of (terrestrial) nations to occupy the same planet within the same plane of existence, it is assumed that Earth contains many different "layers" or dimensions to accommodate all of the nations that call NS Earth home. Some of these layers or dimensions overlap. It is completely up to the players involved in a roleplay to decide how exactly their concept of NS Earth will work within the RP framework -- particularly if the nations involved do not share the same plane, dimension, sphere or layer of the Earth.
Physically, Earth is equal to one Earth mass and is one astronomical unit (roughly 93 million miles) from the Sun. It contains a core of molten rock and most of its surface is covered by vast oceans. Its atmosphere is composed mostly of nitrogen and oxygen. It is famously said to resemble a "big blue marble" from space. From the surface of the moon, it would be roughly 13 times the size of the Moon in Earth's sky. From the other planets and/or moons, Earth would appear as a bright, pale-blue star. The Moon is also visible as a star from the surface of Mars, Venus or Mercury.
