33+ Planet Trivia Questions and Answers

Planets float around our solar system, light up the night sky, and hold a world of knowledge and wonder that we have barely scratched the surface of. Whether it’s gas giant planets, moons, or terrestrial planets that rotate around our sun, our solar systems knowledge can easily be challenged at any time. So that’s what we want to do with this planet trivia collection.

Planet Trivia

The massive behemoths that float around space in our system and across the Milky Way galaxy hold worlds of information and knowledge. So let’s look at some of the most well-known planet trivia that could fascinate you.

  • The surface temperature on Mars can reach up to -220 degrees F at night during the wintertime.
  • Jupiter’s largest moon is about 4.503 billion years old.
  • The recognized dwarf planets in our solar system include Pluto, Eris, Ceres, Makemake, and Haumea.
  • The largest planet ever discovered is ROXs 42Bb, which is 2.5 times bigger than Jupiter.

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Challenge your friends and colleagues to a space and planet trivia game with over 511+ space and planets trivia questions and answers.

Planet Trivia Questions and Answers

Do you want to see for yourself how much planet trivia you know? Try out this planets and solar system quiz and see how many you answer right.

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What three planets are closest to the Sun?▶ Mercury, Venus & Earth
What planet in our solar system has the longest day?▶ Venus (243 Earth days)
Which planet in our solar system spins the fastest?▶ Jupiter, it rotates once on average in just under 10 hours.
Which planet has the most moons?▶ Jupiter
Of the four rocky planets in our solar system, which is the largest and most dense?▶ Earth
What’s the oldest planet in our solar system?▶ Jupiter
What’s the second smallest planet in our solar system?▶ Mars
What’s the brightest planet in earth’s night sky?▶ Venus
What are the terrestrial planets in our solar system?▶ Earth, Mars, Mercury and Venus
In 1781, what was the first planet to be discovered using the telescope?▶ Uranus
What is the hottest planet in our solar system?▶ Venus
Callisto is the name of a moon orbiting what planet in our solar system?▶ Jupiter
Curiosity is a car-sized rover that was launched by NASA in 2011 to explore which planet?▶ Mars
What planet in our solar system has the most gravity?▶ Jupiter
Which planet is furthest from the sun?▶ Neptune
How many planets in our solar system have moons?▶ Six
Which planet in our solar system has the most oxygen?▶ Earth
Ceres is a dwarf planet that lies between the orbits of which two planets in our solar system?▶ Mars & Jupiter
Titan, Enceladus, Mimas & Iapetus are just some of the moons orbiting which planet?▶ Saturn
Which planet in our solar system has an axis that is tilted by 98 degrees?▶ Uranus
The Great Red Spot is a gigantic storm located on which planet in our solar system?▶ Jupiter
In our solar system which two planets are known as ice giants?▶ Uranus and Neptune
In our solar system, which planet has the shortest day?▶ Jupiter
Where did a robot named Spirit remain operational over 2000 sols past its planned 90-sol mission?▶ Mars
Ganymede, the largest moon in our solar system, belongs to which planet?▶ Jupiter
Which planet’s moons are nearly all named after Shakespearean characters?▶ Uranus
How many planets in our solar system are not named after a god or goddess?▶ One, Earth
Named for the fleet-footed Roman messenger god, which planet has the shortest orbit around the sun?▶ Mercury (87.97 days)
Which is the largest of Mars’ two moons?▶ Phobos

About the Author

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Tim majored in Humanities with a bachelor in English and Theatre at New York State University. He lectured on entertainment business studies for three years at Plymouth College.

Tim has been a trivia host in his current hometown of Pittsburgh for the past two years. He enjoys hanging out with people who love trivia just as much as he does.

His friends call him the Question Master.

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