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.Know More
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 is just slightly smaller than the Earth, with a radius of about 3,760 miles and a circumference a little over 23,627 miles. These measurements make Venus about 94 percent of the size of the Earth, although it is only about 82 percent as voluminous.Full Answer >
The planet with the highest average surface temperature is Venus, because of its thick atmosphere and its proximity to the sun. The average temperature on the surface of Venus is 860 degrees Fahrenheit.Full Answer >
Nicknames for the eight planets in the solar system are Swift Planet for Mercury, Morning Star and Evening Star for Venus, Blue Planet for Earth, Red Planet for Mars, Giant Planet for Jupiter, Ringed Planet for Saturn, Ice Giant for Uranus and Big Blue Planet for Neptune. Pluto was once considered a planet and had the nickname Ice Planet, but it is now classified as a dwarf planet.Full Answer >
The diameters of the planets are as follows: Mercury is 3,032 miles; Venus is 7,521 miles; Earth is 7,926 miles; Mars is 4,222 miles; Jupiter is 88,846 miles; Saturn is 74,898 miles; Uranus is 31,763 miles; Neptune is 30,778 miles. As a result, the largest planet by diameter is Jupiter and the smallest is Mercury.Full Answer >