Something Finally Happened In The World's Longest, Slowest Experiment
If a blob of tar falls but no-one is around to see it, did it really drop? (Yes.)
A blob of tar, also known as pitch, has finally dropped for the ninth time in a long-running experiment at the University of Queensland in Australia.
Sadly the scientist who looked over the experiment for 50 years died last year and never saw the pitch drop himself.
Seven drops fell between 1930 and 1988, roughly one every eight years.
But now the drops seem to be slowing down. Just two have been observed since then, one in 2000 and the latest earlier this month, averaging once every 13 years.
Here is the pitch not dropping in a timelapse from last year.
And here it is dropping, finally.
Strange as it may seem to the uninitiated, there is actually some fascinating physics involved in the experiment, which some of us are hoping will continue for at least another hundred years - sympathetic custodians permitting.