A new study suggests dark matter may not exist. Physicist Naman Kumar proposes gravity weakens differently across vast distances, following a 1/r rule. This modified gravity model reproduces galaxy rotation curves using only visible matter, challenging long-held assumptions about unseen mass in the universe, and reshaping theories of cosmic structure formation.​A new study suggests dark matter may not exist. Physicist Naman Kumar proposes gravity weakens differently across vast distances, following a 1/r rule. This modified gravity model reproduces galaxy rotation curves using only visible matter, challenging long-held assumptions about unseen mass in the universe, and reshaping theories of cosmic structure formation.  ​ science