My pal Amanda Bauer—aka Astropixie—has been posting a great series of short videos called Sixty Symbols, where scientists discuss the meanings of a given symbol in science, and the story behind them.

My friend Amanda Bauer just got her PhD in astronomy! W00t! She's at UT Austin, and you may know her better as astropixie. She is very cool and deserving and I'm sure all you BABLoggees who read her ...