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Space Trivia Quiz

Explore planets, stars, the Moon and space missions. Choose your difficulty and discover the scientific story behind each answer.

EasyA relaxed start with familiar facts.MediumThink a little deeper and connect what you know.HardTrust your knowledge and notice the details.Very HardLess familiar facts for curious minds.

FOUR LEVELS, FOUR EXAMPLES

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Start with questions about our solar system, celestial bodies and the history of observation. Source links lead to explanations from institutions such as NASA.

Easy · SpaceWhich planet is known as the Red Planet?

Mars. Iron minerals on Mars oxidize, giving its surface a reddish appearance.

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Medium · SpaceWhich planet has the hottest surface in our solar system?

Venus. Venus's dense atmosphere creates a strong greenhouse effect, making its surface hotter than Mercury's.

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Hard · SpaceApproximately how many Earth days does Mercury take to orbit the Sun?

88. A Mercury year lasts about 88 Earth days. Its proximity to the Sun gives it a short orbital period.

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Very Hard · SpaceApproximately how many Earth years does Neptune take to orbit the Sun?

165. A Neptune year lasts about 165 Earth years. Far from the Sun, it has a very large orbit.

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