sasdrtx writes "Today is Robert A. Heinlein's 100th birthday. Regarded as one of the most influential hard Sci-Fi authors of the 20th century, it's definitely worth looking back at his influence on not only science fiction, but the space program, the english language, counter-culture, and political discourse. The Space Review has a piece entitled Ride the Lightning, which discusses Heinlein's history with the space program and (sometimes incorrect) assertions about the future of space flight. For a look at the official celebration, the Heinlein Centennial website has numerous resources available. The program for the event (pdf) makes it sound like they're having a great time in Kansas City."