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