From Twitter https://twitter.com/: At this month's Astronomy on Tap, we'll be getting into the spirit of holiday sharing with interacting binary stars: stellar siblings who give of themselves, sometimes with dramatic results. Join us Thursday 12/21, 6pm, @UrbanaPizzaM https://twitter.com/AstroOnTapCU/status/941332697418485762/photo/1 https://chirp.cooleysekula.net/attachment/45584