Sol-311

Sol-311 (loc. Earth) is the third planet from the Sun in the Solar system. It is the densest planet in this system, is fifth in diameter and mass among all the planets and is also the largest among the terrestrial planets, which also include Mercury, Venus and Mars.
== Satellites ==
There is one natural satellite orbiting the planet — the Moon.
== Population ==
By 2035 Earth's population has surpassed 9 billion, but after 2050 it has been steadily declining, reaching a lower number of just 7.5 billion by 2059. By 2084, however, Earth's population has once again reached 8.8 billion.
The decline and incline of Earth's population in the middle of the 21st century A.D. has been explained by large numbers of emigrations away from Earth which were then followed by an increase in both birth rate and immigrations from other planets.
== Physical ==
== Socio-political ==
== History ==
Main page: History of Earth.
== Trivia ==
* This is the first page where user input is actively encouraged.
Category:Planets