1. What glows at night but hides in the day?
Answer: The Moon

2. What place has no air yet stars always shine?
Answer: Outer space

3. What travels around Earth once every 24 hours?
Answer: The planet itself

4. What burns bright without oxygen?
Answer: A star

5. What floats between planets and never lands?
Answer: A comet

6. What do astronauts eat their meals inside of?
Answer: A space station

7. What has rings but no fingers?
Answer: Saturn

8. What is full of dust but never gets dirty?
Answer: The Moon’s surface

9. What shines like a diamond but is made of gas?
Answer: A star

10. What spins on its axis but never moves from its path?
Answer: Earth

11. What do we call a star that explodes?
Answer: A supernova

12. What is black, massive, and swallows light?
Answer: A black hole

13. What planet is known as the red one?
Answer: Mars

14. What is icy, far away, and orbits the Sun?
Answer: Pluto

15. What rock races through the sky with a fiery tail?
Answer: A meteor

16. What space traveler never returns once sent?
Answer: A probe

17. What is the closest star to Earth?
Answer: The Sun

18. What keeps planets from floating away?
Answer: Gravity

19. What is endless but expanding?
Answer: The universe

20. What twinkles but doesn’t blink?
Answer: A star

21. What is brighter than a thousand Suns but lasts only seconds?
Answer: A supernova burst

22. What is invisible but holds galaxies together?
Answer: Dark matter

23. What spins faster than any record?
Answer: A neutron star

24. What has craters and no air?
Answer: The Moon

25. What planet could float on water?
Answer: Saturn

26. What moves faster than sound and light in dreams?
Answer: Imagination

27. What keeps astronauts from floating away?
Answer: Tethers

28. What glows green in some skies?
Answer: The Northern Lights

29. What do you see when you look up on a clear night?
Answer: Stars

30. What planet has the longest day?
Answer: Venus

31. What small world has a heart-shaped region?
Answer: Pluto

32. What planet rains diamonds?
Answer: Neptune

33. What’s the biggest planet in our solar system?
Answer: Jupiter

34. What is a galaxy made of?
Answer: Stars, dust, and gas

35. What makes astronauts weightless?
Answer: Zero gravity

36. What keeps the Moon in orbit?
Answer: Earth’s gravity

37. What do you call the path planets follow?
Answer: Orbit

38. What is faster than a rocket?
Answer: Light

39. What tool helps us see distant galaxies?
Answer: Telescope

40. What do we call a frozen ball of dust and gas?
Answer: A comet

41. What planet has storms bigger than Earth?
Answer: Jupiter

42. What’s always in space but never on Earth?
Answer: Vacuum

43. What protects Earth from solar wind?
Answer: Magnetic field

44. What star guides sailors at night?
Answer: The North Star

45. What’s bright, moves slowly, and circles Earth?
Answer: The International Space Station

46. What gives off light but not heat?
Answer: Reflected starlight

47. What is called the twin of Earth?
Answer: Venus

48. What shines only by reflecting sunlight?
Answer: The Moon

49. What is the hottest planet?
Answer: Venus

50. What do astronauts wear to breathe?
Answer: Spacesuit

51. What planet has giant ice caps?
Answer: Mars

52. What travels at 186,000 miles per second?
Answer: Light

53. What’s larger than a planet but smaller than a galaxy?
Answer: A star system

54. What planet has the Great Red Spot?
Answer: Jupiter

55. What cosmic body has tails and orbits the Sun?
Answer: Comet

56. What planet has 27 moons?
Answer: Uranus

57. What’s the smallest planet?
Answer: Mercury

58. What hides stars behind clouds of dust?
Answer: Nebula

59. What’s the edge of our solar system called?
Answer: The Kuiper Belt

60. What’s beyond the Milky Way?
Answer: Other galaxies

61. What do we call an object orbiting a planet?
Answer: A moon

62. What’s a man-made object that orbits Earth?
Answer: Satellite

63. What planet is blue from space?
Answer: Earth

64. What makes up most of the universe?
Answer: Dark energy

65. What’s the Milky Way made of?
Answer: Billions of stars

66. What’s the first manned spacecraft to the Moon?
Answer: Apollo 11

67. What is space without time called?
Answer: Singularity

68. What’s the line where sky meets infinity?
Answer: The horizon

69. What separates day from night on a planet?
Answer: Terminator line

70. What planet has methane clouds?
Answer: Uranus

71. What light shows us dead stars?
Answer: X-rays

72. What keeps stars burning?
Answer: Nuclear fusion

73. What’s the center of a galaxy called?
Answer: Galactic core

74. What makes Earth blue from space?
Answer: Oceans

75. What planet spins on its side?
Answer: Uranus

76. What’s the brightest planet?
Answer: Venus

77. What’s a shooting star really?
Answer: A meteor

78. What’s a cluster of billions of stars called?
Answer: A galaxy

79. What’s the name of our galaxy?
Answer: The Milky Way

80. What force bends light in space?
Answer: Gravity

81. What planet has a day longer than its year?
Answer: Venus

82. What cosmic storm never ends?
Answer: Jupiter’s Great Red Spot

83. What is seen once a night but never touched?
Answer: The stars

84. What helps rockets escape Earth’s pull?
Answer: Thrust

85. What’s smaller than a planet but orbits the Sun?
Answer: Asteroid

86. What shines but is made of rock?
Answer: Meteorite

87. What planet has the most moons?
Answer: Saturn

88. What’s Earth’s only natural satellite?
Answer: The Moon

89. What are the trails in the night sky called?
Answer: Meteors

90. What do astronauts use to communicate?
Answer: Radio

91. What’s a collection of stars in a shape called?
Answer: Constellation

92. What is the speed limit of the universe?
Answer: Speed of light

93. What’s the first planet from the Sun?
Answer: Mercury

94. What keeps the solar system together?
Answer: The Sun’s gravity

95. What’s known as Earth’s twin?
Answer: Venus

96. What’s farthest from the Sun but still a planet?
Answer: Neptune

97. What happens when stars collapse?
Answer: Black holes form

98. What do astronauts ride to space?
Answer: Rockets

99. What makes space look black?
Answer: Lack of atmosphere

100. What do you call a map of the stars?
Answer: Star chart