In 1979, Alan Cummings, a scientist working on NASA’s groundbreaking Voyager mission, witnessed an extraordinary sight that gave him chills. As he entered a room at Caltech in Pasadena, California, he saw an alien world projected on a screen – a moon teeming with active volcanoes. The image, just transmitted from space, revealed Jupiter’s moon … Continue reading NASA Scientist Recalls Awe-Inspiring Moment When First Voyager Images Revealed Io’s Volcanoes