Is dark matter made of mysterious ‘ghost particles?’ Galaxy clusters could hold the answer

“WIMPs are still the leading candidate for dark matter, but billions of dollars of experiments have been done, only getting stronger and stronger upper limits, so alternative scenarios have to be considered.”

‘It would be a fundamental breakthrough’: Mysterious dark matter may interact with cosmic ‘ghost particles’

“If this interaction between dark matter and neutrinos is confirmed, it would be a fundamental breakthrough.”