A research finds out a ghost particles that should not be exist.
Dubbed the 'sterile neutrino', the mysterious particle passes through matter without interacting with it at all.
The particle was first spotted in the mid-1990s in an experiment that left scientists baffled. However, until now, the result of that experiment couldn't be replicated.
If the latest study is confirmed, it could transform the foundations of particle physics.
It could also help solve cosmic mysteries like the existence of dark matter – an unidentified substance that makes up roughly 27 per cent of the universe.