Light is just electromagnetic energy. We have black light, all sorts of light in both the visible spectrum and the invisible (At least according to the human eye.) My point was that the word "dark" isn't really technically accurate when describing a movement of energy. If one had "Superman" eyes that see in ALL possible spectra - this force would be visible as it interacts with the galaxies.
I'm not saying the dark force is made up of sunlight!
I just thinks some folks like the sound of "dark" force and "dark" matter and it starts layfolk to imagine something like Mickey Mouse's enemy the phantom blot shoving galaxies around:
This might capture the imagination, but it's probably not a very good way to describe an, as yet, unidentified force of nature. But it's catchy so it will stick even long after we learn how to "see" this force.
;-)
Space/Science » in reply to re: Actually what they're detecting is a 'force'. .. so far, no light.
re: Actually what they're detecting is a 'force'. .. so far, no light.
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- After the dark matter and the dark energy, welcome to..