A new theory seems to indicate that dark matter and dark energy are actually the same substance. Termed a "dark fluid," the theoretical stuff accurately accounts for all known observational evidence for either substance. It also (seems to) make more testable predictions, allowing headway to be made in one of the most mysterious phenomena in astrophysics today.

What does it mean? Hell if I know. But even the most esoteric scientific phenomena can lead to wonderful things, so why not cheer from the sidelines?