text: The author supports his idea of exploring venus by giving reasons on why it is good to explore it and by giving reasons on how hard it is to explore venus without good use of technology and understandment on the planet,in paragraph two the author explains on how no spacecraft has survived on venus for more then a few hours, on paragraph four the author explains that "if our sister planet is inhospitable...why do scientists discuss further visits to its surface...Astronomers are fascinated by venus because it once have been the most earth like planet in our sloar system." this is an explination on that exploring venus is dangerous but it may help us learn more about if there was another earth before us.