The Earth

The crust is the outermost layer of the Earth, and it is composed of solid rock.

The mantle is the middle layer of the Earth, and it is composed of hot, molten rock.

The core is the innermost layer of the Earth, and it is composed of solid iron and nickel.

The Earth's atmosphere is composed of approximately 78% nitrogen, 21% oxygen, and 1% carbon dioxide, along with trace amounts of other gases.

The Earth's average temperature is approximately 15 degrees Celsius (59 degrees Fahrenheit).

The Earth's diameter is approximately 12,742 kilometers (7,918 miles).

The Earth's mass is approximately 5.972 × 10^24 kilograms (1.317 × 10^25 pounds).

The Earth's density is approximately 5.51 grams per cubic centimeter (0.20 pounds per cubic inch).

It takes the Earth approximately 365 days (one year) to orbit the Sun.

It takes the Earth approximately 24 hours (one day) to rotate on its axis.

The Earth's tilt is approximately 23.5 degrees.

The Earth's magnetic field is a dipole, meaning it has two poles: a north pole and a south pole.

The Earth is the third planet from the Sun in the solar system.

The Earth's moon is called Luna.

The Earth's average distance from the Sun is approximately 150 million kilometers (93 million miles).