Here is a word cloud I created, using the entire science abstract book. I've shown the 250 top used words (excluding numbers). I always enjoy making this diagram, silly though it may be. Many of the most used words you see are "mechanics": affiliations, days of presentation, etc. You can zoom in and get a sense for what the hot topics are currently in Astronomy.
Some other fun things jump out. A few names are evident (e.g. David and John). You also can quickly see the two powerhouse states for doing astronomy (or at least for presenting at AAS): CA and MD.
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Have fun, dear astronomers! Enjoy talking about Kepler, galaxies, and stars... and if you're so inclined, help me gather data for my project on gender in talks!!