Astronomy Crossword Puzzle

1234567891011121314
Across
  1. 5. the galaxy our solar system belongs to
  2. 7. receive radio waves emitted from objects in space
  3. 9. uses mirrors to focus light rays
  4. 12. theory that the universe expanded from a hot, dense initial condition at a specific point in time around 13 billion years ago
  5. 13. unit of measurement equal to the distance light travels in one year
  6. 14. formed when celestial bodies such as planets and moons orbit around a star
Down
  1. 1. a collection of stars gases dust and planets held together by gravity
  2. 2. uses convex lenses to bend and focus light rays
  3. 3. matter and space considered as a whole
  4. 4. galaxies that have a nucleus of bright stars and two or more spiral arms that wind outward from the center – ex. The Milky Way Galaxy
  5. 6. galaxies that have many different shapes and are smaller than other types of galaxies
  6. 8. shift in light toward the red end of the visible light spectrum due to the wavelengths of light from galaxies being stretched as they move away from Earth
  7. 10. collects the light from distant stars and separates that light into bands of different colors
  8. 11. galaxies shaped like spherical or flattened disks, similar to a football shape