There are currently 92 moons known to orbit Jupiter. The four largest – Io, Europa, Ganymede and Callisto – were discovered by Galileo Galilei in 1610 when he pointed the first astronomical telescope ...
A blood moon ... brightly in the sky. Planets are typically far brighter than stars, so they're great for stargazers to spot. Venus will be the brighter of the pair, but Jupiter will also be ...