Tags: luminiferous ether, planets
Categories: Alternative conceptions
An example of an historical scientific conception:
"…Johann Helvius in 1668 reasoned that planets were made from perfect aether, but had to spin to be everlasting, otherwise the heat of the Sun would damage them."
Nigel Calder (1980) The Comet is Coming! The feverish legacy of Mr Halley. BBC
