For example, the author says that Venus has "a thick atmosphere of almost 97 percent carbon dioxide" and "clouds of highly corrosive sulfuric acid." The author continues giving specific challenges by saying that Venus's temperatures "average over 800 degrees Fahrenheit, and the atmospheric pressure is 90 times greater than what we experience." Lastly, the author explains the geology and weather dangers such as "erupting volcanoes, powerful earthquakes, and frequent lightning strikes." The author provides these specific dangers in the article to show the readers that scientists are aware of the challenges they must deal with so that they are prepared.