Across
- 2. a scientist who studies objects in the universe
- 7. an attempt to find out about something
- 8. the only star in our solar system
- 9. information that supports an answer to a question
- 12. a period of time that is 24 hours long
- 13. the pull between Earth and other objects
- 14. to move in a regular path around something
- 15. the length of time it takes for Earth to orbit the sun once
Down
- 1. a huge object in space that gives off heat and light
- 3. description of how or why something works
- 4. scientists make them to answer questions about the world
- 5. something we observe to be similar over and over again
- 6. an arrangement of stars as seen from Earth
- 10. to make a mental picture using info from various sources
- 11. observations or measurements recorded in an investigation