if someone had discovered the physical effect before we'd derived the equations that helped us find it - that would have been called bollocks too.
Actually try looking at the rotation of our galaxy, Vera Rubin did and what was measured didn't match what we thought we knew.
So we now have dark matter and dark energy as a book keeping exercise until we can actually work out what is going on.
May people consider dark matter and dark energy to be bollocks but so far nothing else fits and we don't appear to have a better explanation.
Biting the hand that feeds IT
