Prediction Isn’t Comprehension

Maybe you just don’t know gravity
As well as you thought you did. Haloes
Of dark matter might not be out there.

Gravity might have wrinkles in it,
Secrets it prefers to keep well hid.
Consistency’s so consistently

Correctly predicted, it’s tricky,
Not to say foolish, to theorize
Gravities with inconsistent twists.

But the galaxies seem so misty,
And all rushing away too quickly,
And after all, what is gravity

But the most successful prediction
Since the first correctly called eclipse?