text: Second, I can tell that the authors research about the past ,because in the article in paragraph 2" each previous mission was unmanned, no spacecarft survived, and not a single spaceship has touched down on Venus in more than three decades" shows he actually know about spacecraft and about 3 decades ago. Also, in paragraph 7 he also conclude about first envisioned in 1800s and 1940s during World War ll.