The Solar System

What makes Venus the hottest planet?
Answered by Science Channel
  • Science Channel

    Science Channel

  1. Of all the planets in our solar system, Venus is the hottest one, even hotter than Mercury, the planet closest to the sun. Venus, whose daytime temperature can reach 900 degrees Fahrenheit (464 degrees Celsius), is surrounded by a thick gaseous layer that consists mostly of carbon dioxide. When the sun's rays reach Venus, the carbon dioxide traps the heat within, causing a kind of planetary greenhouse effect. With its noxious carbon dioxide gas, its roaring temperatures and its fierce winds that storm across its surface, Venus is understandably known as one of the most inhospitable planets.

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