I take issue with discovery. To say there’s a mysterious inexplicable expansion of the universe hardly qualifies as such. It sounds more like a failure to understand our physical laws than to posit the presence of mysterious and otherwise undetectable entity.
The use of the word “discovery” in this case was carefully considered. The discovery of “dark energy” refers to the effect: the unexpected acceleration of the expansion of space. The fact that the expansion is accelerating was a discovery, and dark energy is just the name given to “whatever causes that”.
I take issue with discovery. To say there’s a mysterious inexplicable expansion of the universe hardly qualifies as such. It sounds more like a failure to understand our physical laws than to posit the presence of mysterious and otherwise undetectable entity.
The use of the word “discovery” in this case was carefully considered. The discovery of “dark energy” refers to the effect: the unexpected acceleration of the expansion of space. The fact that the expansion is accelerating was a discovery, and dark energy is just the name given to “whatever causes that”.