AETHER

Personification of the sky or upper air breathed by the Olympians

• Air of the Olympian gods

• Greek god of the upper air

• Heavens; clear sky: Var.

• Heavens: Var.

• Michelson and Morley failed to find it

• The heavens

• What Olympians breathed

• Son of Erebus and Night or of Chaos and Darkness

• A medium that was once supposed to fill all space and to support the propagation of electromagnetic waves