UPDATE:  SOLVED! at 12:19 CDT

Okay, everybody wake up.  It’s time for the Saturday riddle.  C’mon… let’s get perky.

I’ll give you a hint right off:  We’ve talked about today’s subject a lot.  You absolutely know what it is.  You’ve heard about it since you were a tot.  It’s so easy, it’ll make your teeth ache.  Ready?

This is a single object.

It was known to ancient astronomers.

It is visible to the naked eye.

Historical image – Andromeda  Isaac Roberts, published in 1899

It is responsible for something very, very large.

This object gives more than it gets.

Sometimes, we hear this object on the Earth.

Image “Old Radio”  Duncan Rawlinson

I bet you figured it out already, haven’t you?

I’m in the comments.