text: In paragraph four he starts telling us why its worthy, despite how hard it is to study by saying "astronomers are fascinated by Venus because it may well once have been the most Earth-like plane in our solar system." and then continues on to say "Long ago, Venus was probably covered largely with oceans and could have supported various forms of life, just like Earth." so he is implying that benefits of studying Venus would be that we would be able to see if there were other life forms on the planet in the past, and that we would be able to find out what happened to the past earth like planet. The author also keeps telling us that Venus can be our nearest option for a planetary visit, so that it would be cheaper to get there and we could try to study it more without spending too much despite the dangers. Cheaper then its counterpart Mars at least. He even tells us of some ways that NASA has ideas for sending humans to Venus so that we would be able to study it without that much effort despite the dangers.