text: In the passage, the author states,"Each mission to Venus was unmanned because none of the spacecrafts have survived landing." These factors show that with the materials we have, we should be going for a safer planet like the moon or mars. The author also states that the planet atmosphere is 97 percent carbon dioxide with highly corrosive clouds. This shows that most metals we have can be melted by the clouds and the temperature at the surface is too much for a human to handle.