EARTH AND SPACE

  1. Sun – The star at the center of our solar system.

  2. Star – A glowing ball of gas producing light.

  3. Planet – Object that orbits a star.

  4. Moon – A natural satellite orbiting a planet.

  5. Orbit – Path an object takes around another.

  6. Solar system – Sun + planets + moons + asteroids.

  7. Constellation – Group of stars forming patterns.

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

  9. Revolution – Earth orbiting the Sun (causes seasons).

  10. Axis – Imaginary line Earth spins on.

  11. Galaxy – Huge group of stars (example: Milky Way).

  12. Gravity – Force that holds planets in orbit.

  13. Asteroid – Rocky object in space.

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

  15. Meteorite – A meteor that reaches the ground.

  16. Comet – Ice and dust object with a tail.