Perhaps it is apocryphal:
how Pope Callixtus (number three)
had Halley’s Comet excommunicated.
Poor Haley’s Comet: barred from taking
the sacraments (you know, like marriage)
and limiting its status in the Church.
One wonders how a comet is
supposed to change its attitude;
repent; and then return to full communion.
One wonders at the ignorance of Popes.