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Venus facts for kids

The planet Venus

Venus is the hottest planet in our Solar System. Find out why it is so hot, why its Sun rises in the west, how slowly it spins, and test yourself with a quick quiz.

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Meet Venus

Venus is the second planet from the Sun. Venus and Mars are Earth's next-door neighbours. It is about 12,100 kilometres across, a little smaller than Earth. Venus is so close to Earth's size that it is sometimes called Earth's twin.

The hottest planet

Venus is the hottest planet in our Solar System, hotter even than Mercury. Venus is farther from the Sun than Mercury, but its thick atmosphere traps heat like a blanket.

Its surface is about 467 degrees Celsius, hot enough to melt lead. Its air is mostly carbon dioxide, and its thick clouds are made of an acid called sulfuric acid.

Slow and backwards

Venus spins the opposite way to most planets. On Venus, the Sun rises in the west and sets in the east.

It spins very slowly too. One turn takes 243 Earth days, which is longer than its year of 225 Earth days.

Bright in the sky

After the Sun and the Moon, Venus is the brightest thing in our sky. Venus is often called the Morning Star or the Evening Star, even though it is a planet.

Venus has no moons and no rings.

Venus in a nutshell

Quick quiz: Venus

Try these, then tap Show answer under each one.

  1. True or false: Venus is hotter than Mercury.

    True. Venus is farther from the Sun, but its thick atmosphere traps the heat. It's hot enough to melt lead.

  2. Why is Venus so hot?

    • Its thick atmosphere traps heat like a blanket
    • It is the closest planet to the Sun
    • It spins very fast
    • It is made of fire

    Its thick atmosphere traps heat like a blanket. Venus is farther from the Sun than Mercury, but its thick atmosphere traps heat like a blanket.

  3. On Venus, where does the Sun rise?

    • In the east
    • In the west
    • In the north
    • It never rises

    In the west. On Venus, the Sun rises in the west and sets in the east.

  4. True or false: one spin of Venus takes longer than its trip round the Sun.

    True. One spin takes 243 Earth days. A trip round the Sun takes 225.

  5. What is Venus often called, even though it is a planet?

    • The Morning Star
    • The Red Planet
    • The Blue Moon
    • The North Star

    The Morning Star. Venus is often called the Morning Star or the Evening Star, even though it is a planet.

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