[quote=Legend]
Oh, I know this one! The energy would eventually all dissipate as heat! But because light moves so quickly, it would go out faster than the blink of an eye! Actually, someone on YouTube made a video of what a circular mirror would look like! I'll show you if you have a phone that gets Internet.
[/quote]

Oh my gosh thank you for answering that question. I've been pondering that for literal years fjkdslkjfsddf