EARTH AND SPACE

Sun

The star at the center of our solar system.

Star

A glowing ball of gas producing light.

Planet

Object that orbits a star.

Moon

A natural satellite orbiting a planet.

Orbit

Path an object takes around another.

Solar system

Sun + planets + moons + asteroids.

Constellation

Group of stars forming patterns.

Rotation

Earth spinning on its axis (causes day/night).

Revolution

Earth orbiting the Sun (causes seasons).

Axis

Imaginary line Earth spins on.

Galaxy

Huge group of stars (example: Milky Way).

Gravity

Force that holds planets in orbit.

Asteroid

Rocky object in space.

Meteor

Rock that burns entering Earth’s atmosphere (“shooting star”).

Meteorite

A meteor that reaches the ground.

Comet

Ice and dust object with a tail.