Astronomers have reported a rare celestial event, witnessed from Earth on Saturday, in which the shadows of three moons of Jupiter namely Io, Europa and Callisto were seen simultaneously on the surface of the planet. The live view of this rare spectacle was broadcasted by Brazilian astronomers on Saturday morning through Youtube. The event was also showed by the Griffith Observatory in the U.S. on its website.
The phenomenon has been described by some observers as a sign of apocalypse or a critical change in the movement of celestial forces. At the beginning of the event, Callisto rotated into a space between Jupiter and the Sun and at about 3:11 AM GMT its shadow was seen on the planet. About 90 minutes later, the shadow of Io was observed and Europa’s shadow appeared nearly half an hour past 6:00 AM GMT.
The shadows of three moons on Jupiter’s surface were seen simultaneously for about 25 minutes. Another rare spectacle was marked by Callisto eclipsing Io. The positions of the shadows of Io and Callisto remained on top of each other for about 19 minutes. This was seen as one dark pinhead on Jupiter’s luminous surface. According to the astronomers, in spite of the fact that Jupiter has 67 moons, triple transit is a rare event.
It was 2013 when the last triple moon transit was observed in the Western Hemisphere and now the event is not expected to occur till 2032. There are plenty of images and recorded videos of the event for those who missed it either due to cloudy skies or no access to computers.