text: Secondly, how do we no if the spacecraft will be able to take that type of heat. The palnet surface temperatures on Venus average over 800 degrees fahrenheit I know that's way too hot. That type of temperature is beyond of what I can imagine I know Earth's surface is hot, but not that hot. Venus atmosphere is 97 percent carbon dioxide I think it's like that, because it's so close the sun. The closer you get to the sun the more radiant energy it gives off and too much radiant energy can be bad. Like how do we know that the spacecraft will still be getting singnal from Earth, because wonder if the eletronic gadgets over heat and just give out because the planet is so hot.