text: Venus now has a differant atmosphere. The atsmosphere is thicker and 97 percent carbon dioxide. NASA has tried to study Venus in the past, but no space craft survived the landing for more than a few hours. NASA has not tried to take any kind of space craft to Venus for more than 3 decades. On Venus, the surface averages over 800 degrees fahrenheit. The conditions are for more extreme. Venus has the hottest suface temperature of any other planet.