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Across
  1. 1. - A large hole on the surface of a planet or moon, caused by an impact.
  2. 3. - A small icy body that releases gas and dust, forming a tail.
  3. 7. - The fourth planet from the sun, often called the "Red Planet."
  4. 8. - A natural or artificial object that orbits a planet.
  5. 10. - The largest planet in our solar system, known for its Great Red Spot.
  6. 12. - A large object that orbits a star.
  7. 14. - A bright, shining object in space that produces light and heat.
  8. 15. - The energy emitted by stars and other celestial objects.
  9. 17. - The layer of gases surrounding a planet.
  10. 19. - A region in space where gravity is so strong that nothing can escape.
  11. 21. - Invisible material that makes up most of the universe’s mass.
  12. 22. - The sun and all the objects that orbit around it.
  13. 25. - A streak of light produced when a meteoroid burns up in the atmosphere.
  14. 26. - High-energy particles that travel through space at high speeds.
  15. 29. - The process that powers stars by combining atoms.
  16. 30. - The power that makes stars shine and move objects in space.
  17. 31. - A bright object in space, powered by a supermassive black hole.
  18. 34. - The galaxy that contains our solar system.
Down
  1. 2. - The third planet from the sun and the only known planet with life.
  2. 3. - A group of stars or galaxies held together by gravity.
  3. 4. - The shape of the Milky Way galaxy.
  4. 5. - The path a planet or moon takes around a star or planet.
  5. 6. - Energy that travels through space in the form of waves or particles.
  6. 9. - A rocky object that orbits the sun, mostly found in the asteroid belt.
  7. 11. - A spinning neutron star that emits beams of radiation.
  8. 13. - A planet that orbits a star outside our solar system.
  9. 16. - A giant cloud of dust and gas where stars are born.
  10. 18. - A tool used to observe distant objects in space.
  11. 20. - A person trained to travel and work in space.
  12. 23. - The closest planet to the sun in our solar system.
  13. 24. - The force that pulls objects toward each other.
  14. 27. - Everything that exists, including all galaxies, stars, and planets.
  15. 28. - The second planet from the sun, known for its thick atmosphere.
  16. 32. - The explosion of a star, making it very bright for a short time.
  17. 33. - A huge system of stars, dust, and gas held together by gravity.