Its hard to believe its been 20 years since the US space shuttle Challenger blew up. I was a University of Saskatchewan student at the time, and my first inkling something had happened was half hearing a radio news report on the accident as I walked through Place Riel. On the MSNBC website James Oberg has an article discussing 7 myths about the disaster. Oberg has written numerous books and articles about the space programs of various nations, and is considered an expert on the Soviet and Russian space programs.