Science · Space

Space and Solar System Vocabulary

Space words from asteroid to orbit for word games and review.

  • 🎓 Grades 4–6
  • 🧪 Science
  • 📐 MS-ESS1-3
  • ❓ 20 questions
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  1. solar system

    The sun and everything that orbits it

  2. planet

    Large round body that orbits a star

  3. dwarf planet

    Small round world like Pluto

  4. orbit

    Path an object takes around another

  5. axis

    Imaginary line an object spins around

  6. rotation

    One full spin on an axis

  7. revolution

    One full trip around the sun

  8. gravity

    Force that pulls objects toward each other

  9. asteroid

    Rocky object that orbits the sun

  10. comet

    Ball of ice and dust with a glowing tail

  11. meteor

    Streak of light when space rock burns in air

  12. meteorite

    Space rock that lands on Earth

  13. moon

    Natural object that orbits a planet

  14. star

    Huge ball of hot glowing gas

  15. galaxy

    Huge system of stars, gas and dust

  16. constellation

    Group of stars that forms a pattern

  17. telescope

    Tool that makes far objects look closer

  18. astronaut

    Person trained to travel in space

  19. crater

    Bowl-shaped hole made by an impact

  20. light-year

    Distance light travels in one year

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