QUINCY — The Quincy Astronomy Club will present a lecture on gravitational waves at 7 p.m. on Thursday, Nov. 16, in Room D022/023 at John Wood Community College. Guest lecturer will be John Wood astronomy professor Randy Wolfmeyer.

Gravitational waves are tiny ripples in spacetime that offer a new way to observe the universe. They allow us to detect the collisions of the most-dense objects in the universe: black holes and neutron stars. The discussion will address how these objects form and the amazing feats of science and engineering that allow us to detect them.

The Astronomy Club was formed by local amateur astronomers and seeks to teach, explore and expand minds about space and our universe. Lectures are held monthly, usually on the last Thursday of the month. The club also holds evening observing sessions. These are scheduled as weather and observing conditions permit. Local amateurs with their telescopes guide the observing sessions.

Room D022/D023 is located on the lower north end of the Building D in the rear. Parking is in Lot 4 on the lower level. Enter either through door C2 or the door marked Paul Heath Building.