The Juno spacecraft orbiting Jupiter has discovered an FM radio signal coming from the moon Ganymede. The find is a first-time detection from the moon. Patrick Wiggins, one of NASA’s Ambassadors to Utah, says, “It’s not E.T. It’s more of a natural function.” Juno was traveling across the polar region of Jupiter, where magnetic field lines connect to Ganymede, and that’s when it crossed the radio source. Scientifically, it is called a “decametric radio emission.” Here on earth we know it as Wi-Fi. And we use it every day. According to Britannica.com, Jupiter’s radio emissions were discovered in 1955, and...