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The famous April Fool joke played in 1976 by Patrick Moore resurfaced on the Internet in 2014 as a [supposedly] serious story. Astronomy writer Phil Plait had debunked it earlier in the year, yet was already back again! The story begins, "It has been revealed by the British astronomer Patrick Moore that, on the morning of April 4th 2014, an extraordinary astronomical event will occur."
I like the "it has been revealed by" thing. Sir Patrick died in 2012. I'm sure he was no more likely to return from the grave to spout nonsense than he would have when he was alive. That's apart from the fact that it was not only a joke, but one that made fun of the "Jupiter effect" which was popular in the media in the late 70s. He wanted to make the point that the gravity of distant planets doesn't affect the Earth. Gravitational strength drops off rapidly with distance.