[Man_of_Reason]

"Some physicists theorize that a vacuum, like empty space, is actually a seething mass of unknown particles that continuously pop in and out of existence, creating pressure that drives the expansion of the universe."

Sounds like they're getting back to the ether theories.

[Centurion2000]

Sounds like they're getting back to the ether theories.

Do some checking on zero point energy .... ether is definately making a comeback.