Where do astronauts
leave their spaceships ?
Moon(s): The Moon
Equatorial diameter: 12,756.270 km
Mass: 5.9736×1024 kg
Equatorial gravity: 9.7801 m/s2
Named after: Unsure
Orbital period: 365 days
Earth, also known as Tellus, is the third closet planet to the sun. It is largest of the solar system's terrestial planets and the only planetary body that modern science confirms harbors life. It has a single moon, dubbed 'the moon'.
The Earth's crust varies in thickness, usually thinner at the oceans and thicker under the continents. The inner core and crust are solid; outer core and mantle layers are plastic or semifluid.
Earth is the densest major body in the solar system.
Unlike other terrestial planets, the Earth's crust is divided into several seperate solid plates which float around independently on top of the hot mantle below. This theory is described as plate tetonics.
There are (at present) eight major plates:
The Earth is belived to be fairly young.
71% of the Earth's surface is covered by water. Earth is the only planet which water can exist as a liquid form on the surface. Liquid water, of course, is essential for life as we know it.
The Earth's atmosphere is made up of 77% nitrogen, 21% oxygen, with traces of argon, carbon dioxide and water.
Where do Martians drink beer ?
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