Top 10 Facts About Planet Earth
1
Earth is estimated to be around 4.54 billion years old.
The Earth's atmosphere is composed of 78% nitrogen, 21% oxygen,
and 1% other gases.
2
The Earth's magnetic field protects us from harmful solar and cosmic radiation.
3
The Earth is the only known planet in our solar system that has liquid water on its surface.
4
The Earth's rotation is gradually slowing down at a rate of approximately 17 milliseconds per hundred years.
5
The Earth's highest point is Mount Everest,
which stands at 29,029 feet (8,848 meters) tall.
6
The Earth's lowest point is the Challenger Deep, located in the Mariana Trench,
which is approximately 36,070 feet (10,994 meters) deep.
7
The Earth's circumference at the equator is approximately 24,901 miles (40,075 kilometers).
8
The Earth's core is believed to be composed of iron and nickel,
and is approximately 4,000 miles (6,400 kilometers) in diameter.
9
The Earth's moon is the fifth largest moon in the solar system,
and is approximately one-quarter the size of Earth.
10
The Earth experiences four seasons due to its axial tilt of approximately 23.5 degrees.
Bonus Fact
Top 10 Facts about Mars...