Jupiter’s four large moons (Io, Europa, Ganymede, and Callisto) are hard to miss, and a favorite telescopic target of backyard observers. They are commonly referred to as the Galilean Moon’s due to the fact that they were discovered by Galileo Galilei over 400 years ago.
It just so happens that on the night of January 23-24th (Friday night into Saturday morning) these four large moons will be putting on a must see show. A triple shadow transit!
The video above from NASA outlines that transits and events as they unfold on the night of January 23rd. I have listed them below giving the Central Standard times.