text: First of all, about 97 percent of a thick atmosphere blankets Venus are carbon dioxide. The National Aeronautics and Space Administration (NASA) is working on study about the planet, Venus. If NASA is possible to make spacecraft that could go to land on the surface of Venus, it will be difficult people research on the planet because 97 percent of the atmosphere are carbon dioxide. This condition makes different envionment from Earth."A thick atmosphere of almost 97 percent carbon dioxide blankets Venus"(Paragraph 3).