Space Trivia Questions to Challenge Every Future Astronaut

There’s something about space that instantly makes a trivia round more fun. Maybe it’s the giant planets, the weird astronaut facts, or the fact that the universe is packed with things that sound completely made up but are actually real.

One minute you’re answering a simple question about the Moon, and the next you’re arguing over planets, black holes, and whether Pluto still deserves more respect. It mixes the stuff we all vaguely remember from school with the wild, mind-bending facts that make space feel huge, strange, and honestly a little unbelievable.

Whether you’re playing with friends, family, students, or just testing yourself, these questions bring a fun mix of wonder, challenge, and that classic “how did I not know that?” feeling.

Easy space trivia questions

1. What galaxy is Earth in?
   Answer: The Milky Way.
2. What is the closest star to Earth?
   Answer: The Sun.
3. Which planet is known as the Red Planet?
   Answer: Mars.
4. What is Earth’s natural satellite called?
   Answer: The Moon.
5. How many planets are in our solar system?
   Answer: Eight.
6. Which planet is famous for its rings?
   Answer: Saturn.
7. What is the largest planet in our solar system?
   Answer: Jupiter.
8. What is the smallest planet in our solar system?
   Answer: Mercury.
9. Which planet do humans live on?
   Answer: Earth.
10. What force keeps planets in orbit around the Sun?
    Answer: Gravity.
11. What do astronauts wear in space to stay safe?
    Answer: A spacesuit.
12. What is the name of the path a planet follows around the Sun?
    Answer: An orbit.
13. Which planet is closest to the Sun?
    Answer: Mercury.
14. Which planet is farthest from the Sun?
    Answer: Neptune.
15. What is the name of the first satellite sent into space?
    Answer: Sputnik 1.
16. What is the Sun mostly made of?
    Answer: Hydrogen and helium.
17. Which planet is often called Earth’s “sister planet” because of its size?
    Answer: Venus.
18. What shiny objects can streak across the night sky when they burn up in Earth’s atmosphere?
    Answer: Meteors.
19. What do we call a scientist who studies space, stars, and planets?
    Answer: An astronomer.
20. What is the giant glowing ball at the center of our solar system?
    Answer: The Sun.

Solar system trivia questions

21. Which planet has the longest year in our solar system?
    Answer: Neptune.
22. Which planet has the shortest year in our solar system?
    Answer: Mercury.
23. Which planet spins on its side?
    Answer: Uranus.
24. Which planet is the hottest in our solar system?
    Answer: Venus.
25. Which planet has a Great Red Spot?
    Answer: Jupiter.
26. Which planet is known for its blue color and strong winds?
    Answer: Neptune.
27. What is the asteroid belt found between?
    Answer: Mars and Jupiter.
28. Which two planets are known as ice giants?
    Answer: Uranus and Neptune.
29. Which four planets are called the gas giants or giant outer planets?
    Answer: Jupiter, Saturn, Uranus, and Neptune.
30. Which planet has the most prominent ring system?
    Answer: Saturn.
31. Which planet has two small moons named Phobos and Deimos?
    Answer: Mars.
32. Which planet is named after the Roman god of war?
    Answer: Mars.
33. Which planet is named after the Roman god of the sea?
    Answer: Neptune.
34. Which planet is named after the Roman messenger god?
    Answer: Mercury.
35. Which planet is named after the Roman goddess of love?
    Answer: Venus.
36. Which dwarf planet was once classified as the ninth planet?
    Answer: Pluto.
37. Which planet has the biggest volcano known in the solar system?
    Answer: Mars.
38. What is the name of that giant volcano on Mars?
    Answer: Olympus Mons.
39. Which planet has a day longer than its year?
    Answer: Venus.
40. Which planet is usually easiest to spot because it can shine so brightly near sunrise or sunset?
    Answer: Venus.

Moon trivia questions

41. What is the Moon’s surface covered with?
    Answer: Dust, rock, and craters.
42. What causes the phases of the Moon?
    Answer: The Moon’s changing position relative to Earth and the Sun.
43. What is a full moon?
    Answer: When the side of the Moon facing Earth is fully lit by the Sun.
44. What is a new moon?
    Answer: When the side facing Earth is mostly dark.
45. What is the dark, flat area on the Moon called in Latin?
    Answer: Mare, or maria in plural.
46. Does the Moon make its own light?
    Answer: No. It reflects sunlight.
47. About how long does it take the Moon to orbit Earth?
    Answer: About 27 days.
48. What do we call an eclipse when Earth blocks sunlight from reaching the Moon?
    Answer: A lunar eclipse.
49. What do we call an eclipse when the Moon blocks the Sun from our view?
    Answer: A solar eclipse.
50. What is the far side of the Moon often incorrectly called?
    Answer: The dark side of the Moon.
51. Is the far side of the Moon always dark?
    Answer: No. It gets sunlight too.
52. What is the Moon’s gravity compared with Earth’s?
    Answer: About one-sixth of Earth’s gravity.
53. What was the first mission to land humans on the Moon?
    Answer: Apollo 11.
54. Who was the first person to walk on the Moon?
    Answer: Neil Armstrong.
55. Who was the second person to walk on the Moon?
    Answer: Buzz Aldrin.
56. In what year did humans first land on the Moon?
    Answer: 1969.
57. What spacecraft carried Apollo astronauts from lunar orbit down to the Moon’s surface?
    Answer: The lunar module.
58. What famous phrase did Neil Armstrong say as he stepped onto the Moon?
    Answer: “That’s one small step for man, one giant leap for mankind.”
59. Which Apollo mission was the last to land astronauts on the Moon?
    Answer: Apollo 17.
60. What item did Apollo astronauts leave on the Moon besides equipment and flags?
    Answer: Footprints.

Astronaut and space exploration trivia questions

61. Who was the first human in space?
    Answer: Yuri Gagarin.
62. Which country launched the first human into space?
    Answer: The Soviet Union.
63. Who was the first woman in space?
    Answer: Valentina Tereshkova.
64. Who was the first American to orbit Earth?
    Answer: John Glenn.
65. Who was the first American woman in space?
    Answer: Sally Ride.
66. What does NASA stand for?
    Answer: National Aeronautics and Space Administration.
67. What does ISS stand for?
    Answer: International Space Station.
68. What does a space station do?
    Answer: It serves as a place where astronauts live and work in orbit.
69. What planet does the International Space Station orbit?
    Answer: Earth.
70. What reusable vehicle did NASA use for many missions from 1981 to 2011?
    Answer: The space shuttle.
71. What was the name of the first space shuttle?
    Answer: Columbia.
72. Which telescope was launched into space in 1990 and changed astronomy forever?
    Answer: The Hubble Space Telescope.
73. What newer space telescope studies the universe in infrared light?
    Answer: The James Webb Space Telescope.
74. What is the name of NASA’s program aimed at returning humans to the Moon?
    Answer: Artemis.
75. What do astronauts experience in orbit that makes them seem to float?
    Answer: Microgravity.
76. What is the name of the first privately funded spacecraft to carry humans to orbit for NASA missions?
    Answer: Crew Dragon.
77. What kind of vehicle lifts spacecraft off Earth?
    Answer: A rocket.
78. What basic idea lets a rocket move upward?
    Answer: It pushes exhaust gases downward, creating thrust upward.
79. What do mission control teams do during a space mission?
    Answer: They monitor and guide the mission from Earth.
80. What word describes a vehicle sent into space without people on board?
    Answer: Uncrewed, or unmanned.

Stars, galaxies, and universe trivia questions

81. What is a galaxy?
    Answer: A huge collection of stars, gas, dust, and dark matter held together by gravity.
82. What shape is the Milky Way?
    Answer: A barred spiral galaxy.
83. What do we call a star that suddenly explodes at the end of its life?
    Answer: A supernova.
84. What is left behind when some massive stars collapse after a supernova?
    Answer: A neutron star or a black hole.
85. What is a black hole?
    Answer: A region in space where gravity is so strong that not even light can escape.
86. What is the nearest galaxy of major size to the Milky Way?
    Answer: The Andromeda Galaxy.
87. What do we call a group of stars that forms a recognized pattern in the sky?
    Answer: A constellation.
88. What is the name of the North Star?
    Answer: Polaris.
89. What do we call the cloud of gas and dust where stars are born?
    Answer: A nebula.
90. What is the hottest type of star color, red or blue?
    Answer: Blue.
91. What is the coolest type of star color, red or blue?
    Answer: Red.
92. What do we call planets outside our solar system?
    Answer: Exoplanets.
93. What unit is often used to measure huge distances in space?
    Answer: A light-year.
94. What is a light-year a measure of?
    Answer: Distance.
95. About how long does sunlight take to reach Earth?
    Answer: About 8 minutes and 20 seconds.
96. What galaxy will likely collide with the Milky Way in the distant future?
    Answer: The Andromeda Galaxy.
97. What do we call the beginning of the universe in the most widely accepted model?
    Answer: The Big Bang.
98. What fills much of the space between stars in a galaxy?
    Answer: Gas and dust.
99. What are shooting stars actually called?
    Answer: Meteors.
100. What do we call a rock from space that survives the trip through Earth’s atmosphere and lands on the ground?
     Answer: A meteorite.

Hard space trivia questions

101. Which moon is the largest in the solar system?
     Answer: Ganymede.
102. Which planet has the strongest winds in the solar system?
     Answer: Neptune.
103. Which moon of Saturn is famous for its thick atmosphere and methane lakes?
     Answer: Titan.
104. Which moon of Jupiter is known for intense volcanic activity?
     Answer: Io.
105. Which moon of Jupiter is thought to have a salty ocean under its icy crust?
     Answer: Europa.
106. Which moon of Neptune orbits backward and is likely a captured object?
     Answer: Triton.
107. What is the Kuiper Belt?
     Answer: A region beyond Neptune filled with icy bodies and dwarf planets.
108. What is the Oort Cloud thought to be?
     Answer: A distant shell of icy objects surrounding the solar system.
109. What is the term for a star system with two stars orbiting each other?
     Answer: A binary star system.
110. What is the name of the point in a planet’s orbit when it is closest to the Sun?
     Answer: Perihelion.
111. What is the name of the point in a planet’s orbit when it is farthest from the Sun?
     Answer: Aphelion.
112. What is the event called when one object in space passes into the shadow of another?
     Answer: An eclipse.
113. What kind of galaxy has no clear spiral or elliptical shape?
     Answer: An irregular galaxy.
114. What is the most common star type in the Milky Way?
     Answer: Red dwarfs.
115. What is the name of the supermassive black hole at the center of the Milky Way?
     Answer: Sagittarius A*.
116. Which planet has the tallest known cliff system, called Verona Rupes, on one of its moons?
     Answer: Uranus, on its moon Miranda.
117. What is the name of Mars’s largest canyon system?
     Answer: Valles Marineris.
118. What is the boundary around a black hole beyond which nothing can escape called?
     Answer: The event horizon.
119. What is cosmic microwave background radiation?
     Answer: Faint leftover radiation from the early universe.
120. What term describes all the ordinary matter we can see, like stars, planets, and people, as opposed to dark matter?
     Answer: Baryonic matter, or ordinary matter.

Space trivia for kids

If you want to make this list work for younger players, start with the first 20 to 30 questions, then pull in a few Moon and astronaut ones. That mix usually lands best because kids know enough to feel smart, but still get surprised.

A solid round for mixed ages is:

• Questions 1 to 10 for easy confidence
• Questions 41 to 60 for Moon favorites
• Questions 61 to 75 for astronauts and rockets
• A few challenge questions like 83, 89, 92, and 101

A fun way to use these at parties or in class

You do not need a full trivia-night setup to make this work. A few easy formats usually get the best reaction:

• Read them one by one and give people 5 seconds to answer
• Split the room into teams and go category by category
• Use the easy section as a warm-up, then jump to the hard questions
• Let kids answer first on a few rounds so the adults do not steamroll everything
• Save the black hole, Moon landing, and weird moon questions for the final round

If you are picking just ten to start with, I’d go with 3, 7, 24, 38, 54, 61, 72, 89, 101, and 115. That set has a nice mix of “everybody knows that” and “hang on, I think I know this.”

• Author
• Recent Posts

Mira

Mira writes trivia for MaxTrivia across pop culture, general knowledge, and history. She keeps questions clear, checks facts, and loves a good “wait, I actually knew that” moment.

Latest posts by Mira (see all)

• Best Soccer Trivia Questions to Challenge Your Group - February 28, 2026
• WWE Trivia Questions That’ll Stump Even Big Fans - February 27, 2026
• Space Trivia Questions to Challenge Every Future Astronaut - February 27, 2026