Down to the wire? (Image: LNGS)
EXTRA dimensions. Time travel. Tachyons. These ideas seemed a little more likely in the wake of claims that subatomic particles called neutrinos had moved faster than light – violating a cornerstone of physics laid down by Einstein. Now, just a few months later, the universe is back to its slightly more mundane self.
The collaboration behind the original claims has discovered two flaws during the retesting of its experiment, called OPERA. These flaws did not definitely affect the results, but offer the most concrete basis yet for doubting that the neutrinos were actually speeding.…
