Earth, Sun, and Moon
Earth is a planet that revolves around the Sun. It takes one year to complete one revolution. Earth is composed (made) of rock. It is much smaller than the Sun.
Because of liquid water and an atmosphere, Earth can support life. The sun provides energy and light for Earth. Earth’s gravity allows organisms, objects, and water to be pulled toward Earth.
Our Sun is 93,000,000 miles away from Earth. The sun’s diameter is 100 times the size of Earth’s diameter.
The Sun is composed of hot gases and plasma. Its atmosphere is also made of hot gases. The Sun produces light and heat for our solar system.
Because of the Sun’s strong gravitational pull, eight planets, as well as their moons and other natural satellites, orbit the Sun.
Our Moon revolves around Earth. It takes about 29 days for the Moon to make one complete revolution around Earth.
The Moon is composed of rock and has valleys, mountains, and craters. The Moon has no atmosphere, allowing objects in space to hit its surface and form craters. It is about 1⁄4 the size of Earth. Because the Moon has less mass than Earth, it also has less gravity. Earth has about 6 times as much gravity as the Moon.
