Science Crossword

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Across
  1. 3. scientists have discovered a massive ___________ heading towards the earth
  2. 5. dwarf, a small star generally the size of a planet
  3. 8. the biggest one of these is the sun
  4. 9. a small rock that orbits the sun
  5. 10. this planet is a dwarf planet
  6. 13. the last one of these was on the 16th of July 2019
  7. 16. we live on this
  8. 17. a moon of Jupiter
  9. 18. some planets have none of these, some have one, and some have multiple
  10. 19. the biggest planet in the solar system
Down
  1. 1. the milky way is a _________
  2. 2. the second planet in the solar system
  3. 4. the periodic rise and fall of the ocean surface occurring once or twice in a 24 hour period
  4. 6. hole, the first picture of this was found in 2019
  5. 7. a small, irregularly shaped object with a mean radius of 11 km and is seven times as massive as the outer moon
  6. 11. what are the things in the solar system?
  7. 12. the earth revolves around this
  8. 14. there are four of these, and a different one occurs every 3 months
  9. 15. it is made of a nucleus of ice and dust
  10. 20. giant, a very large star of high luminosity and low surface temperature