Observer Editor, Free
“Astronomy Night Open House”: U-M Detroit Observatory.
The chance to learn about the Observatory’s antique telescopes, hear presentations on astronomical phenomena, and (weather permitting) observe the night sky through telescopes. 8–10:30 p.m., U-M Detroit Observatory, 1398 E. Ann at Observatory. Preregistration required at detroitobservatory.umich.edu. Free. 764–3482.