IMHO our current conception of dark matter/energy is just a modern application of 'aether'[1]. It basically means we're not sure what it is yet, but it's there.

IMHO our current conception of dark matter/energy is just a modern application of 'aether'[1]. It basically means we're not sure what it is yet, but it's there. [1] http://en.wikipedia.org/wiki/Aether_(classical_element) http://en.wikipedia.org/wiki/Aether_(classical_element)