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Which Planet Is the Hottest and Why?
spacescience
Quick Answer
Venus is the hottest planet despite being farther from the Sun than Mercury, due to its runaway greenhouse effect.
The Full Story
Venus holds the record for the hottest planet in our solar system with surface temperatures averaging about 465 °C — hot enough to melt lead. Although Mercury is closer to the Sun, it lacks a significant atmosphere to trap heat. Venus's thick atmosphere (about 96 % carbon dioxide) creates an extreme greenhouse effect, trapping solar energy and raising surface temperatures far above what distance from the Sun alone would produce. Atmospheric pressure on Venus is about 92 times that of Earth.
Key Facts
1.Venus's surface temperature is relatively uniform — poles and equator are nearly the same.
2.A day on Venus (243 Earth days) is longer than its year (225 Earth days).
3.Venus rotates backwards compared to most planets (retrograde rotation).
YouTube Angle
Suggested video title for this topic:
"Venus — Why the Second Planet Burns Hotter Than Mercury"