Question

how is venus more hotter than mercury

Answer 1

Venus is hotter than Mercury because it has a much thicker atmosphere. ... The heat the atmosphere traps is called the greenhouse effect. If Venusdid not have an atmosphere the surface would be -128 degrees Fahrenheit much colder than 333 degrees Fahrenheit, the average temperature of Mercury.

Answer 2

This is a great question! The answer to it lies in the fact that Venus has a very dense atmosphere made up of carbon dioxide, nitrogen, and sulfuric acid, while Mercury has a very thin atmosphere with various gases, but very little carbon dioxide. So what's so important about carbon dioxide? Well, sunlight will pass through Venus' clouds (which contain mostly carbon dioxide) and warm the surface of the planet. Usually, the surface of a planet is warmed during the day and cools off at night by releasing infrared radiation (heat) back into space. But the carbon dioxide in Venus' clouds absorbs energy from infrared radiation very well and "traps" the heat on the planet, making it very warm. This has sometimes been called a "runaway greenhouse effect." We don't see this happen on Mercury because its atmosphere is not thick and does not have much carbon dioxide in it. I hope this helps!