Patterns of Earth and Sky

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Across
  1. 4. - the amount of light that appears to come from an object
  2. 5. - the planet we live on
  3. 6. - to make sense of data
  4. 8. - a group of billions of stars
  5. 9. - a period of time that is 24 hours long and includes daytime and nighttime
  6. 12. an attempt to find out about something
  7. 16. - the line where Earth and the sky look like they come together
  8. 17. - to try to learn more about something
  9. 18. - a huge object in space that gives of heat and light
  10. 19. - a person who uses science knowledge to design something in order to solve a problem
  11. 20. - a tool for observing objects that are very far away
Down
  1. 1. an arrangement of star
  2. 2. - a ball-shaped object
  3. 3. - the only star in our solar system
  4. 7. - a scientist who studies stars, planets, and other objects in the universe
  5. 10. - something we observe to be similar over and over again
  6. 11. - the imaginary line that an object, such as Earth
  7. 13. - to make a picture in your mind using information from different resources
  8. 14. - something scientists make to answer questions about the real world
  9. 15. - observations or measurements recorded in an investigation