But... but... it's settled science!
There is no such thing as “settled” Science.
Science is one continuous progress report, from a myriad number of “experts.”
Junk science does not depend on testing, and re-testing, but SCIENCE does.
Ponder this: How many “Laws” of Gravity do we say we know today?
The answer is at least two, that we know of: Newton’s and Einstein’s are the best documented, tested and re-tested, but there is that unsettling thing about matter, DARK matter.
What Hypothesis of Gravity is correct? The answer is a resounding “Yes.”