Into The Universe

Edit Answers
1234567891011121314151617181920212223
Across
  1. 5. A powerful and luminous explosion of a star
  2. 6. A composition of particles that do not emit or absorb light
  3. 8. A system of billions of stars
  4. 12. The galaxy in which we live in
  5. 13. A celestial body that orbits around a larger body
  6. 15. A region of space that no matter or radiation can escape from
  7. 17. A cloud of dust and gas in outer space
  8. 19. A massive and extremely remote celestial object
  9. 21. A small body of matter from space that enters the atmosphere
  10. 22. A celestial body resembling a small planet
  11. 23. A group of stars that forms an identifiable pattern
Down
  1. 1. The natural satellite of Earth
  2. 2. A celestial object that emits regular pulses of radio waves
  3. 3. A star with a large increase in brightness
  4. 4. How astronomers explain the way the universe began
  5. 5. The collection of eight groups of planets and their moons circling around the sun
  6. 7. A planet orbiting a star outside of the Solar System
  7. 9. Matter that has an opposite electric charge
  8. 10. A small and dense star around the size of a normal planet
  9. 11. A fixed luminous point in the night sky
  10. 14. Small, rocky objects that orbit the Sun
  11. 16. A large planet of relatively low density
  12. 18. A celestial body made out of gases/rocks/dust
  13. 20. A celestial body moving in an orbit around a star