text: The author of the article "The Challenge of Exploring Venus" suggests that studying Venus is a worthy pursuit despite the dangers it presents. The author was able to effectively support the idea that studying Venus is worth the risk, as it is the nearest planet to visit, as well as the idea of a blimp-like vehicle allowing close access to the planet to make new scientific discoveries. Despite the dangerous temperatures, and atmosphere composed of nearly 97 percent carbon dioxide, the author provided many examples as to why studying Venus is worth the risk to make new discoveries, and gather beneficial information about Earth's so- called "twin".      The face on Mars is actually just a natural landform. The "Face on Mars" has became a pop icon, it has starrd in a Hollywood film, appeared in books, magazines, radio talk shows and even haunted grocerys tore checkout lines for 25 years. Its the Martian equivalent of a butte or mesa- landforms common around the American West. " It reminds me the morst of Middle Butte in the Snake River Plain of Idaho," says Garvin. "That's a lava dome that takes the form of an isolated mesa about the same height as the Face on Mars."