Why is Jupiter the hottest planet(at it's surface)in our solar system?

Answer 1

Eric L. is correct that Venus is hotter than Mercury because the clouds hold in the heat on Venus. The maximum temperature on Mercury is 800º F (427º C) and the average temperature of Venus is 900º F (482º C). At its surface Jupiter, which is composed of gases, has an average temperature of -196º F (-127º C). Click on the links below for this information:
http://www.solarviews.com/eng/venus.htm
http://www.solarviews.com/eng/mercury.htm
http://www.solarviews.com/eng/jupiter.htm

Answer 2

Venus is the hottest planet at surface temperature. Jupiter actually gets to be more than 100 degrees Celsius at it's ground but that is because of it's thick atmosphere blanketing it's small inner core. With the atmosphere, it can trap heat. It is the 3rd hottest planet at surface temp in our solar system.

Answer 3

Not definitive proof that is true.
Jupiter radiates about 3 times the amount of heat that it receives from the sun, but that doesn't make it the hottest (as far as we know).
However, the intense gravity and pressure at Jupiter's surface (if it has one, there may not actually be a solid surface as we understand it) could cause the temperature to be higher than would be normally expected. As well, it is radiating heat from within and that would also increase the surface temperature.
Venus is (as far as we know) the hottest planet in our system due to the greenhouse effect and its proximity to the sun.

Answer 4

It's not...

"In short, Venus is by far the hottest planet in our solar system, with a very minimal diurnal temperature spread."

http://www.crh.noaa.gov/fsd/astro/venus.php

"The enormously CO2-rich atmosphere generates a strong greenhouse effect that raises the surface temperature to over 400 °C. This makes Venus' surface hotter than Mercury's, even though Venus is nearly twice as distant from the Sun and receives only 25% of the solar irradiance."

http://en.wikipedia.org/wiki/Venus_(planet)

Answer 5

I'm afraid I'd have to disagree with your premise. The lowly little planet Mercury, which is tidally coupled to the sun, has the distinction of having both the highest and lowest surface temperatures in our solar system.

Answer 6

again, more data is needed...especially in light of the fact,'there's nothing like being there.' however, perhaps it's large surface area allows for the capture of more of the sun's energy...in spite of the distance involved. additionally, it's ( jupiter's) composition, chemically, both at the surface and subsurface...more then likely promote both retention and capture of stellar energy...especially photon's.