Space Trivia
- 📚 8 topics
- ❓ 1,046+ questions
- 🎚️ Easy to expert
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Pick a topic to preview real questions and start a free game — every answer comes with an explanation, so you learn as you play. Every topic carries easy, medium and hard questions, so beginners and experts both get a real game.
Sample Space Quiz Questions
A mix of easy, medium and hard — questions run from warm-up to expert, so there's a real challenge at every level. Think you know the answers? Play to find out.
This is the largest planet in our solar system, known for its Great Red Spot.
Difficulty: Easy- Saturn
- Jupiter
- Neptune
- Uranus
This equation relates a black hole's entropy to its event horizon surface area, suggesting black holes have enormous entropy: S = A/4.
Difficulty: Medium- Hawking equation
- Bekenstein-Hawking formula
- Penrose formula
- Wheeler-DeWitt equation
This theoretical bound limits the maximum luminosity of a star or AGN where radiation pressure balances gravitational attraction.
Difficulty: Hard- Eddington Luminosity
- Chandrasekhar Luminosity
- Kelvin-Helmholtz Luminosity
- Bondi Luminosity
This billionaire entrepreneur founded SpaceX in 2002 with the goal of making humanity a multi-planetary species.
Difficulty: Easy- Elon Musk
- Jeff Bezos
- Richard Branson
- Peter Thiel
This Apollo 12 astronaut made history when struck by lightning twice during launch, yet the mission continued successfully.
Difficulty: Medium- Richard Gordon
- Alan Bean
- Pete Conrad
- Charles Conrad Jr.
This Apollo 14 landing site was originally the target for Apollo 13 before that mission was aborted.
Difficulty: Hard- Taurus-Littrow
- Fra Mauro
- Hadley-Apennine
- Descartes Highlands
The planet known as the "Red Planet" due to iron oxide on its surface.
Difficulty: Easy- Venus
- Mars
- Mercury
- Jupiter
This maneuver, first achieved by Gemini 6 and 7 in 1965, was essential for Apollo Moon missions to succeed.
Difficulty: Medium- Lunar insertion
- Orbital rendezvous
- Atmospheric reentry
- Trans-lunar injection
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