Is "Endless void" redundant?

Question

Is "Endless void" redundant?

Answer 1

No.

Endless means "without end." Void means "empty."

The two words mean different things, so using them both is not redundant. (You can have a non-endless void, e.g. a hole in your back yard, and you can have something be endless that is not empty, like a road leading off into the distance.)

"Empty void" or "endless infinity" would be redundant.