This month's Astronomy on Tap event will discuss "Siblings Who Share," that is, interacting binary stars. I'm not sure what that means exactly, but I have a pretty good idea, and I'm glad my siblings are not around to attend with me. If yours are indeed around, and you're looking for a free and family-friendly activity for Thursday, December 21st, look no further. 

AoT is at Pizza M at 6 p.m. on Thursday, December 21st. Professor Paul Ricker is giving the presentation. More information is available on Facebook

Image from Facebook.