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Which of the following is the hottest planet in the solar system ?

  • A.Mars
  • B.Venus
  • C.Mercury
  • D.Jupiter

Answer: B

The hottest planet is Venus.

Venus has a surface temperature of about 465°C, hot enough to melt lead. Its dense atmosphere, mostly carbon dioxide, traps heat in a runaway greenhouse effect, so the temperature stays high across the planet, day and night.

The trap is Mercury, which is closer to the Sun but has almost no atmosphere: its day side reaches about 430°C, but the heat escapes and its night side falls far below freezing. Mars and Jupiter are much colder.

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