Gravity's Strange Behavior in Binary Star Systems Challenges Established Theories

A study analyzing data from the Gaia space mission suggests evidence of gravity acting contrary to the predictions of Newton and Einstein, favoring modified gravity over dark matter. The study focused on the orbital motions of 26,500 wide-binary star systems and found discrepancies in gravitational acceleration at wide separations, matching predictions of a specific model of modified gravity called MOND. However, other researchers caution against drawing conclusions too soon, citing previous studies that found no evidence for MOND. Further follow-up work using different instruments may provide confirmation.