Aether (classical element)
CLASSICAL ELEMENT
Classical Element/Ether; The Fifth Element (philosophy); Quintessence (alchemy); Void (classical element); Quintessence (classical element); Idea (classical element); Ether (classical element); The ether; Æther (classical element); Aither (classical element)
According to ancient and medieval science, aether (, alternative spellings include æther, aither, and ether), also known as the fifth element or quintessence, is the material that fills the region of the universe beyond the terrestrial sphere. The concept of aether was used in several theories to explain several natural phenomena, such as the traveling of light and gravity.