Space Crossword 2023

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Across
  1. 3. The force that keeps planets in orbit around the Sun.
  2. 4. The force that opposes motion between two surfaces in contact.
  3. 6. The seventh planet from the Sun.
  4. 10. The layer of the Earth's atmosphere where most weather occurs.
  5. 11. The unit used to measure distances between stars.
  6. 14. The force that pushes objects away from each other.
  7. 16. The fifth and largest planet from the Sun.
  8. 17. The study of the universe as a whole.
  9. 20. The study of the planets, moons, asteroids, and comets in our solar system.
  10. 22. The sixth planet from the Sun, known for its prominent rings.
  11. 23. The closest star to Earth.
  12. 25. The study of the origin and development of the universe.
  13. 26. The third planet from the Sun and our home.
  14. 29. The outermost layer of the Earth's atmosphere.
  15. 33. The bright center of a galaxy, containing millions or billions of stars.
  16. 34. The second smallest planet in our solar system and the recent focus of space exploration.
  17. 35. The unit used to measure distances within our solar system.
  18. 36. The phase of the moon when it appears fully illuminated.
  19. 37. The phase of the moon when it is more than half but not fully illuminated.
  20. 39. A unit used to measure how far light travels in one year
  21. 40. The largest moon in our solar system, orbiting Jupiter.
Down
  1. 1. The region of space beyond Earth's atmosphere where there is no gravity.
  2. 2. A word used to describe the state of space that has no atmosphere or air pressure.
  3. 5. The study of celestial objects and phenomena
  4. 7. The study of the Earth's atmosphere and weather.
  5. 8. The phase of the moon when it cannot be seen.
  6. 9. The path that one celestial body takes around another.
  7. 12. The process by which a star releases energy
  8. 13. The phenomenon that causes the apparent shift in the position of a star
  9. 15. The bright streak of light caused by a meteoroid entering Earth's atmosphere.
  10. 18. The layer of the Earth's atmosphere that contains the ozone layer
  11. 19. The name of our galaxy.
  12. 21. The study of the Moon, its features, and its exploration.
  13. 24. The largest planet in our solar system
  14. 25. The phase of the moon when it appears as a thin crescent.
  15. 27. A device used to magnify distant objects.
  16. 28. The study of space travel and exploration.
  17. 30. The smallest planet in our solar system.
  18. 31. The study of the structure and properties of matter and energy.
  19. 32. A natural satellite that orbits a planet.
  20. 38. The process by which plants use sunlight to make food.