Space & Astronomy

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Across
  1. 5. The point of no return around a black hole
  2. 8. The nearest major galaxy to the Milky Way
  3. 10. A region where gravity is too strong for light to escape
  4. 11. A massive system of stars and planets
  5. 13. A bright energetic galaxy core
  6. 16. When one celestial body blocks another
  7. 18. The distance light travels in a year
  8. 21. The center of our solar system
  9. 25. A Russian space traveler
  10. 26. A neutron star with an extremely strong magnetic field
  11. 29. A space rock burning in Earth's atmosphere
  12. 30. A planet famous for its rings
  13. 33. The universe as a whole
  14. 35. Related to the Sun
  15. 36. A vehicle that propels itself into space
  16. 37. A person trained for space travel
  17. 38. A vehicle designed for space travel
  18. 39. Known as the Red Planet
  19. 41. A rapidly spinning neutron star
  20. 42. Part of the name of the space station
  21. 45. A famous space telescope
  22. 46. The farthest planet from the Sun
  23. 48. A body that orbits a planet
Down
  1. 1. A region beyond Neptune with icy bodies
  2. 2. A device to observe distant objects
  3. 3. A small rocky body in space
  4. 4. A planet that rotates on its side
  5. 6. U S space agency
  6. 7. The path of a celestial body
  7. 9. The galaxy that contains our solar system
  8. 11. A ripple in spacetime caused by massive objects
  9. 12. A celestial body orbiting a star
  10. 14. A cloud of gas and dust in space
  11. 15. A force that pulls objects together
  12. 17. Existing between the stars
  13. 19. A massive star's explosive death
  14. 20. The hottest planet in the solar system
  15. 22. Earth’s only natural satellite
  16. 23. An icy body with a glowing tail
  17. 24. A mysterious substance that makes up most of the universe’s mass
  18. 27. The largest planet in the solar system
  19. 28. A private space company founded by Elon Musk
  20. 31. A distant cloud of icy objects
  21. 32. A planet outside our solar system
  22. 34. A luminous sphere of gas held by gravity
  23. 40. The event that started the universe
  24. 41. A dwarf planet in the Kuiper Belt
  25. 43. The dense remnant of a collapsed star
  26. 44. Relating to Earth's moon
  27. 47. The four dimensional continuum of space and time