Space vocabulary and spelling words for kids

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20 essential space vocabulary words

Start with these useful space terms and concise definitions, then print the page as a study sheet or turn the words into an online game.

1. asteroidA rocky object that travels around the Sun.
2. astronautA person trained to travel and work in space.
3. atmosphereThe layer of gases surrounding a planet.
4. cometAn icy object that forms a glowing tail near the Sun.
5. constellationA named pattern of stars seen from Earth.
6. craterA bowl-shaped hollow made by an impact.
7. eclipseAn event in which one space object blocks another.
8. galaxyA vast group of stars, gas, and dust held together by gravity.
9. gravityThe force that keeps planets and moons in orbit.
10. launchTo send a spacecraft or rocket into the air.
11. meteorA streak of light caused by space rock entering an atmosphere.
12. moonA natural object that travels around a planet.
13. orbitThe curved path one object follows around another.
14. planetA large round object that orbits a star.
15. rocketA vehicle propelled by gases pushed from an engine.
16. satelliteAn object that moves in orbit around another object.
17. solarRelating to the Sun.
18. starA huge glowing ball of hot gas.
19. telescopeA tool that makes distant objects appear closer.
20. universeAll space, matter, and energy that exist.

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