Space

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Across
  1. 3. Permanent settlement in space
  2. 5. Illness impacting astronauts
  3. 6. Points in a two body system
  4. 7. Sight from space
  5. 8. Force that pulls objects
  6. 10. Not large enough to orbit the sun
  7. 13. Person trained for spaceflight
  8. 14. Large collection of stars
  9. 17. Debris in orbit
  10. 18. Propels into space
  11. 22. Imaginary sphere around Earth
  12. 23. All matter and energy
  13. 24. Reusable spacecraft
  14. 26. Wide, flat volcano
  15. 27. Between galaxies
  16. 29. Twinkling of stars
  17. 30. Returning to Earth's atmosphere
  18. 33. Small rocky object
  19. 35. Radiation left over from Big Bang
  20. 38. Returning to Earth's atmosphere
  21. 40. Cloud of gas and dust
  22. 42. Massive luminous sphere
  23. 47. Clothing for space travel
  24. 50. Body of ice and dust
  25. 53. Habitable artificial satellite
  26. 54. Conditions in outer space that affect Earth
  27. 56. Natural or artificial object
  28. 57. Part of Earth's upper atmosphere
  29. 60. Extreme gravitational force
  30. 61. Between stars
  31. 63. Settlement on the moon
  32. 64. Location for launching spacecraft
  33. 67. Natural light display
  34. 68. Neptunian object Objects beyond Neptune
  35. 69. Absence of matter
  36. 72. Propulsion system that uses ions
  37. 74. Between planets
  38. 75. Brightness due to gas and dust
  39. 78. Using gravity for acceleration
  40. 79. Small dense star
  41. 80. Group of stars
  42. 81. Sparse matter between stars
  43. 82. Region of icy objects
  44. 83. Increase in frequency due to motion
  45. 84. Stable location in space
Down
  1. 1. Fundamental principles of physics
  2. 2. Not from Earth
  3. 4. Ionized gas
  4. 7. Minimum speed to exit gravitational pull
  5. 9. Earth's natural satellite
  6. 11. Depressions on a surface
  7. 12. Unmanned space vehicle
  8. 15. Boundary where solar wind meets interstellar matter
  9. 16. Boundary around a black hole
  10. 19. Hypothetical transportation system
  11. 20. Layer of gas around a planet
  12. 21. Study of motion in space
  13. 25. 12 constellations
  14. 27. Particle found between stars
  15. 28. Fine particles of matter
  16. 29. Relating to the sun
  17. 31. Dark spots on the sun's surface
  18. 32. Spacecraft powered by rocket engines
  19. 34. Path of an object in space
  20. 36. Explosion of a star
  21. 37. Strategies to reduce space debris
  22. 39. Orbits a star
  23. 41. Magnetic field around a planet
  24. 43. Large star in later stages
  25. 44. Small spacecraft
  26. 45. Travel for recreational purposes
  27. 46. Multiple telescopes
  28. 48. Astronomical facility
  29. 49. Vehicle for moon exploration
  30. 51. Study of life outside Earth
  31. 52. Group of galaxies
  32. 53. Room with sun exposure
  33. 55. Telescope that detects radio waves
  34. 58. A streak of light in the sky
  35. 59. Subatomic particle with low mass
  36. 62. Optical instrument
  37. 65. Process of forming a star
  38. 66. Region of icy objects beyond Neptune
  39. 70. Bubble created by solar winds
  40. 71. Radiation belt around Earth
  41. 73. System of two stars
  42. 76. Activity outside spacecraft
  43. 77. Planet outside our solar system