[Yeti]

IS SPACE just space? Or is it filled with some sort of mysterious, intangible substance? The ancient Greeks believed so, and so did scientists in the 19th century. Yet by the early part of the 20th century, the idea had been discredited and seemed to have gone for good.

Can't read past this. Ever heard of luminiferous ether? When, according to Einstein, gravity bends space, what is it bending? Nothing? How do you bend nothing?

Very annoying. I know some have said there is no ether, but its existence is assumed in most electromagnetic theory, relativity, etc..., and it has never, ever been "discredited."

[FormerLurker]

Very annoying. I know some have said there is no ether, but its existence is assumed in most electromagnetic theory, relativity, etc..., and it has never, ever been "discredited."

SPACE, by very definition, is SOMETHING. It cannot be just NOTHING.