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What Planet Is Hottest?

Published in Planetary Temperatures 2 mins read

Venus is the hottest planet in our solar system.

Understanding Venus's Intense Heat

Venus's extreme temperatures are not due to its proximity to the sun alone. While it's closer to the sun than Earth, its extreme heat is mainly due to its very dense atmosphere, which creates a strong greenhouse effect.

The Greenhouse Effect on Venus

  • Venus has a thick atmosphere made primarily of carbon dioxide.
  • This atmosphere traps heat, preventing it from escaping back into space.
  • The trapped heat raises the surface temperature to approximately 465°C (869°F).
  • This effect is similar to how a greenhouse traps heat on Earth, but much more extreme.

Comparison with Other Planets

It's important to note that while Mercury is closer to the sun, it doesn't have an atmosphere to trap heat, making its temperature vary greatly between day and night.

Table: Comparison of Surface Temperatures

Planet Approximate Surface Temperature
Mercury -173°C to 427°C
Venus 465°C
Earth -88°C to 58°C
Mars -143°C to 35°C
Jupiter -108°C
Saturn -139°C
Uranus -195°C
Neptune -201°C

Key Takeaways

  • The strong greenhouse effect on Venus is the primary cause of its scorching temperatures.
  • Venus is significantly hotter than Mercury, despite Mercury being closer to the sun.

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