No. 292 · Monday, 19 October 2026

Which is biggest?

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The answer

Biggest

  1. Jupiter 139,820 km across

    More than 1,300 Earths would fit inside it. Source

  2. Earth 12,742 km across

    Venus is almost the same size: only about 640 km narrower. Source

  3. Mars 6,779 km across

    About half as wide as Earth. Source

  4. Mercury 4,879 km across

    The smallest planet, but still bigger than our Moon. Source

  5. The Moon 3,474 km across

    About a quarter as wide as Earth. Source

  6. Pluto 2,377 km across

    Pluto is smaller than our Moon. It stopped being called a planet in 2006. Source

Smallest

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