Across
- 3. a scientist who studies stars, planets, and other objects in the universe
- 4. something scientists make to answer questions about the real world
- 5. the sun, the planets that orbit the sun, and other objects that orbit the sun
- 7. the pull between Earth and other objects, which acts even without
- 9. the only star in our solar system
- 10. to move in a regular path around something
- 11. a description of how something works or why something happens
- 13. information that supports an answer to a question
- 15. an arrangement of stars as seen from Earth
- 16. a period of time that's 24 hours long and includes daytime and nighttime
Down
- 1. the length of time it takes Earth to orbit the sun once
- 2. an attempt to find out about something
- 6. to make a mental image
- 8. a huge object in space that gives off heat and light
- 12. something we observe to be similar over and over
- 14. observations or measurements recorded in investigations