Help the Launchpad Astronomy Workshop
Speaking of great causes, if you like science fiction that actually gets the science right, there's nothing better than the annual Launchpad Astronomy Workshop, which since 2007 has been training writers in the basics, as well as some of the finer points, of astronomy. In the early years, when I attended, Launchpad was paid for by grants from NASA and NSF. Now, funding is scarce, and the workshop needs a helping hand from people who care. Science fiction, after all, provides inspiration for future generations of scientists, as well writers, artists, and readers of all kinds.
If you'd like to help, there's just one more day left to make a donation to the crowd-funding of this important program. There are all kinds of free books available to reward donations—all donated by author or publisher-alums of the program (like me!) Check out the donations page and get a free book while helping a great cause!