Space vocabulary

2. planet a nearly round object that orbits a star, is smaller than a planet, and is not a satellite of another object
4. a very large object that orbits a star
6. to revolve around another object
8. anything that takes up space and has weight
9. Belt an area of our solar system beyond the orbit of Neptune where a group of minor planets and other objects orbit the Sun
12. the lightest chemical element; often a gas
15. the centre of a comet, made of small particles of ice and frozen gas that can turn to vapor and form a tail as the comet nears a star
16. the force that pulls all objects toward each other
20. a hole in the ground caused by the impact of an object from space
22. a colourless, odourless, flammable gas commonly called “natural gas”
23. like Earth; describes planets that are rocky and Earthlike in size
24. a solid object that travels around a planet; a natural satellite

1. a body in outer space, made of hot gases, that shines in the night sky
3. a single turn of something around an axis or a fixed point; spinning
5. a layer of gases surrounding a planet, star, or moon
7. a single journey along an orbital path
10. a natural or human-made object that orbits Earth or another object in space
11. giant a large planet that is mainly made up of gases
13. a gas that has no colour, taste, or smell, and which people need to live
14. a space object made of ice and dust that orbits a star and develops a long, bright tail as it nears its star
17. an irregularly shaped rock that orbits a star
18. the bright, vaporized part of a comet that points away from the Sun
19. the centre of an object
21. the second lightest chemical element; often a gas