A new research study was published this month claiming to have found smoking-gun evidence for an alternate theory of gravity, called MOND, that doesn’t need dark matter to explain our observations of the Universe. They did the same test that three other research studies have done in the last couple of years, using the same data from the GAIA mission, and somehow all 4 papers have found different results. Some in favour of MOND, and some in favour of our typical theory of gravity: Einstein’s theory of General Relativity. So what is going on here?
Credit Dr Becky