Time has come to reconsider the existence of a medium (or ether) of space due to recent developments in science on presence of dark energy in space.
Michelson and Morley experiment in 19th century had disproved the existence of the medium of space (ether) that could cause 'ether wind' by rotation of earth, but that experiment was not conclusive for the medium of space that can remain undisturbed by movement of earth. In 21st century, there is a need to look beyond earth for existence of medium of space.