Daiji's Crossword Puzzle

12345678910111213141516171819202122232425
Across
  1. 1. a cloud of interstellar gas and dust to form a solar system.
  2. 4. occurs when a rocky body that had been orbiting the Sun passes through the atmosphere to hit the Earth's surface.
  3. 5. a swarm of trillions of icy bodies that lie far beyond the orbit of Neptune.
  4. 12. the biggest planet in the solar system.
  5. 13. a streak of light in the sky caused by a meteoroid crashing through Earth's atmosphere.
  6. 14. a huge spot on jupiter's surface.
  7. 15. planet that is made up of water, ammonia, and hydrogen.
  8. 17. numerous small bodies that when accreted together form planets.
  9. 19. a habitable planet
  10. 21. planet that is named after a roman god of the sea.
  11. 23. created by the outward expansion of plasma (a collection of charged particles) from the Sun's corona (outermost atmosphere).
  12. 24. a massive amount of asteroids/meteors orbiting around a planet.
  13. 25. an exo planet that was once a planet in our solar system.
Down
  1. 2. when tiny particles are condensed from the nebula and stick together.
  2. 3. the component of its motion in the direction toward or away from us which is detected as a Doppler shift in the star's spectrum.
  3. 6. planet that is named after a roman goddess of beauty and love.
  4. 7. clouds of gas between stars
  5. 8. frozen leftovers from the formation of the solar system composed of dust, rock, and ices.
  6. 9. planets that supports life.
  7. 10. gas planets.
  8. 11. planets that have a similar structure to earth.
  9. 16. smallest planet in the solar system.
  10. 18. a small body that orbits around planets.
  11. 20. planet that is named after a roman god of war.
  12. 22. a planet that is mainly known for its rings.