Maheswari

Definition:

A planet is a large object in space that moves around the Sun in a fixed path called an orbit.

Key points:

• Planets move around the Sun.

• They follow a fixed path called an orbit.

• The Sun’s gravity keeps them moving.

• Planets also spin on their own axis.

• Each planet moves at a different speed.

• Inner planets move faster than outer planets.

• Planets look like they change position in the night sky.

• They do not make their own light.

How did the planets form?

1. Long ago, space had a big cloud called a nebula.

2. Gravity made the cloud shrink and spin.

3. Most of the material gathered at the center and formed the Sun.

4. Tiny bits bumped and stuck.

5. Planets were born.

Fun fact:

All the planets move around the Sun in the same direction.