Earth

-Earth is the third planet from the Sun and the fifth largest

Planet profile

orbit: 149,600,000 km (1.00 AU) from Sun
diameter: 12,756.3 km
moons:1

More Information

The Earth is divided into several layers (depths in km):
0- 40 Crust
40- 400 Upper mantle
400- 650 Transition region
650-2700 Lower mantle
2700-2890 D'' layer
2890-5150 Outer core
5150-6378 Inner core
Most of the mass of the Earth is in the mantle, most of the rest in the core(values below x10^24 kilograms):
atmosphere = 0.0000051
oceans = 0.0014
crust = 0.026
mantle = 4.043
outer core = 1.835
inner core = 0.09675
Earth's chemical composition (by mass) is:
34.6% Iron
29.5% Oxygen
15.2% Silicon
12.7% Magnesium
2.4% Nickel
1.9% Sulfur
0.05% Titanium