An ancient Egyptian statue has left staff at Manchester Museum puzzled after it started slowly rotating inside its glass case.
The phenomenon was only noted after it was moved to another display area a few months ago.
"Professor Brian Cox thinks it is due the differential friction between type of stone and the glass shelf it is on," she said.
To their shock, the time-lapse footage clearly shows the statue doing a slow 180-degrees turn – so slow in fact, it is invisible to the naked eye. Even more mysteriously, it does not appear to rotate any more than 180 degrees and only spins in daylight hours when visitors are passing. Read more.