Changes

Today we have no firm answer on whether the aether exists or not. [[Quantum electrodynamics]] (QED) teaches that when light goes through a vacuum, it is really going through a sea of virtual particles. Cosmologists say that the vacuum is really filled with ''dark energy'', and it is unknown whether that has any relation to the aether concept. The pre-relativity aether theory has been superseded, but the precise nature of the aether is an open question.

Today we have no firm answer on whether the aether exists or not. [[Quantum electrodynamics]] (QED) teaches that when light goes through a vacuum, it is really going through a sea of virtual particles. Cosmologists say that the vacuum is really filled with ''dark energy'', and it is unknown whether that has any relation to the aether concept. The pre-relativity aether theory has been superseded, but the precise nature of the aether is an open question.