Cosmic World September Combat!

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Across
  1. 3. How many billion years ago did Venus look exactly like Earth?
  2. 5. What exists a billion light years across us?
  3. 8. One day on Venus is equals to how long on Earth?
  4. 9. On average, how many times a week, does space debris crash land onto Earth?
  5. 10. In about 4.5 billion years, which galaxy will the Milky Way galaxy collide with?
Down
  1. 1. Which planet is 2 times bigger than all our planets in the solar system combined?
  2. 2. What does the moon not have?
  3. 4. The planet named "189733b" can reach how high of a temperature in degree celcius?
  4. 6. A full NASA suit costs how many million dollars?
  5. 7. All our planets live in which galaxy?