Venus is hotter than Mercury because of its thick atmosphere. According to NASA, Venus' atmosphere is 96 percent carbon dioxide, which holds in heat. Mercury has a very thin atmosphere that does not keep heat on the planet.Continue Reading
The thick layer of carbon dioxide that surrounds Venus acts as a greenhouse. The gases let the heat from the sun in, but do not allow it to leave. This is the same process that happens on Earth with the increased amount of greenhouse gases, though it is much more severe on Venus because the atmosphere of Venus is around 90 times as thick. According to Discovery, carbon dioxide absorbs the heat that Venus tries to give off at night and keeps it on the planet, increasing the surface temperature to around 900 degrees Fahrenheit. The carbon dioxide also causes severe winds and storms on the surface of the planet, making it even more inhospitable.
Mercury has a thin atmosphere with a variety of gases. Because of this, the atmosphere does not have a severe greenhouse effect that acts as a blanket over the planet like Venus. Instead, the heat given off by the Sun is more easily siphoned off during the night.Learn more about Planets
Venus has surface temperatures of up to 900 degrees Fahrenheit because it is much closer to the sun and has a thick, high-pressure atmosphere. When sunlight penetrates the atmosphere of Venus, it does not have the energy to escape efficiently and continues to heat the surface.Full Answer >
Venus essentially has zero humidity because of its high surface temperature of 480 degree Celsius and its atmosphere of 97 percent carbon dioxide. These conditions result to the runaway greenhouse effect, wherein water vapor that rises in the atmosphere, to the so-called "cold trap" region, quickly condenses back to liquid.Full Answer >
People cannot live on Mercury because it does not have the right conditions to support life, offering instead extreme temperatures and an inhospitable atmosphere. Mercury is the closest planet to the sun, and it is also the smallest of all planets in the solar system. It can often be seen from Earth close to the sun during sunset and sunrise.Full Answer >
There is no weather on Mercury because Mercury doesn't have much of an atmosphere. There is no wind, rain, snow, storms or clouds. However, during the day, the temperature can soar to 800 degrees Fahrenheit. At night, the temperature can plummet to negative 290 degrees Fahrenheit.Full Answer >