How Do Scientist Know the Universe is Expanding?

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Across
  1. 3. Spacecraft that travels through space to collect information about earth
  2. 7. Space Station, The constellation that is visible throughout the world
  3. 8. Spacecraft built to take astronauts to and from space
  4. 9. Are clouds of dust in space with vast quantities of hydrogen
  5. 10. Shuttle, Devise launched into the space to orbit Earth or another body in space
  6. 11. Telescope, The constellation that is located in the Northern hemisphere
  7. 12. Way, The idea that a large explosion may started the formation of the universe
  8. 13. Probe, A large ball of gas that produces radiation
  9. 14. A habitable artificial satellite in low Earth orbit
Down
  1. 1. A bright explosion produced by the dying of a supergiant star
  2. 2. Satelite, A large ball of gas that produces radiation
  3. 4. A group of stars that for a pattern in the sky
  4. 5. Belt, Devise that has a huge dish shaped reflector to observe black holes
  5. 6. Telescope, A very large group of stars
  6. 9. The galaxy were our solar system is located
  7. 15. Bang Theory, The constellation that is visible throughout the world