Earth and Sky Glossary

2. to move in a regular path around something
3. to make a picture in your mind using information from different sources
5. something scientists make to answer questions about the real world
7. the sun, the planets that orbit the sun, and other objects that orbit the sun
9. the pull between Earth and other objects, which acts even without touching
11. an attempt to find out about something
14. a description of how something works or why something happens
15. something we observe to be similar over and over again
16. a huge object in space that gives off heat and light

1. an arrangement of stars as seen from Earth
4. a scientist who studies stars, planets, and other objects in the universe
6. information that supports an answer to a question
8. the only star in our solar system
10. observations or measurements recorded in an investigation
12. a period of time that is 24 hours long and includes daytime and nighttime
13. the length of time it takes for Earth to orbit the sun once