The result shows that pancake electrons come from electrons trapped around Ganymede, confirming the existence of radiation belts around the icy moon! After a few orbits of Ganymede, particles from ...

The asteroid strike would have "completely removed the original surface" of Ganymede, thanks to the crater reaching a whopping 25 percent of the moon's size, the researcher said in a recent statement.

Grey, heavily cratered, and peering out from the black of space, Ganymede looks a lot like our moon. But the icy rock is more than 400 million miles away - it's the largest moon in the solar ...