Correction

For those who jumped into the Saturn in Libra article before the astrologer woke up, fed the palace griffins then reported to her workroom this morning, sorry, a wee error: the use of the term 'singularity' instead of 'event horizon' when referring to Saturn moving over Black Hole M87. The singularity is the core of a black hole, the event horizon is its edge.

The correction has been made.