Researchers have discovered that healthy skin — once thought to be a passive barrier — can actually produce antibodies that fight off infections. It’s hoped that the finding could one day lead to the ...
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 ...
And thus, Io, Europa and Ganymede became known as the Galilean moons of Jupiter. Learn more about NASA’s current mission to Europa here. Europa was one of four moons discovered on Jan.