Space

3. the only star in our solar system
4. a description of how something works or why something happens
6. something we observe to be similar over and over again
8. a scientist who studies stars, planets, and other objects in the universe
10. the sun, the planets that orbit the sun, and other objects that orbit the sun
12. the pull between Earth and other objects, which acts even without touching
13. observations or measurements recorded in an investigation
15. something scientists make to answer questions about the real world

1. to make a picture in your mind using information from different sources
2. an arrangement of stars as seen from Earth
4. information that supports an answer to a question
5. an attempt to find out about something
7. to move in a regular path around something
9. a huge object in space that gives off heat and light
11. a period of time that is 24 hours long and includes daytime and nighttime
14. the length of time it takes for Earth to orbit the sun once