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.
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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.
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.
Click on the blurred area to reveal the answer.
Test it out. Click here to reveal the answer 👉 Awesome! You’re ready
| 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
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.
