Which professor teaches Astronomy at Hogwarts?

Professor Sinistra

What Christmas treat is originally from Germany, featuring dried fruit and marzipan inside? Who played a detective named Columbo in the classic television series? In javelin throw, what angle range typically provides the best distance? The American town Boerne celebrates the holiday in honor of its German heritage by performing which European carol? What American band is known for hits including "The Middle" and "Sweetness"?