SESKStuff Everyone Should Know
SESK: Stuff Everyone Should Know · sesk.info/aero-venus-hottest-planet

Which planet has the hottest surface?

Venus, because its thick atmosphere traps heat.

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  1. Mercury
  2. Venus ✔
  3. Mars

Why: Venus has a thick atmosphere that produces a runaway greenhouse effect. Its surface is hotter than Mercury's, even though Mercury is closer to the Sun.

Huh, didn't know that: Venus's surface pressure is about 93 times Earth's sea-level pressure.

The dad joke
Venus never needs a sweater, even on a cloudy day.
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References

Answer: Venus. Venus has a thick atmosphere that produces a runaway greenhouse effect. Its surface is hotter than Mercury's, even though Mercury is closer to the Sun.

  1. Venus Facts science.nasa.gov/venus/venus-facts
    Its thick atmosphere traps heat in a runaway greenhouse effect, making it the hottest planet in our solar system
    Checked 2026-10-10.

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