The result - if true - would violate what Einstein considered the ultimate speed barrier for matter - in the process turning the world of physics upside down.
Many physicists scoffed, claiming that errors in the experiment must have distorted the result. One - Jim Al-Khalili - even promised to eat his own boxer shorts if the experiment was correct.
Now, a repeat of the experiment has shown the same result.
The Geneva-based body said today that in re-runs of the test between October 21 and November 6 scientists used 'tighter' bunches of neutrinos and changed the way their departure time was measured and got the same results, 'ruling out one potential source of systematic error'.
CERN said in a statement today: 'The new measurements do not change the initial conclusion (that the neutrinos broke the light barrier).
'Nevertheless, the observed anomaly in the neutrinos' time of flight from CERN to Gran Sasso still needs further scrutiny and independent measurement before it can be refuted or confirmed.' Read More