So WITHOUT looking it up, please answer the following.
(ETA:If you don't know, then which of the two answers I've given in the comments would seem more likely to be true to you? (without finding out more about the subject, and please be honest. I come from a physics background, so genuinely have no idea what the general population would be more likely to think - and that's what I am curious about). Or humourous answers are welcome) :)
Correct answer given in comments