Europa Glows: Radiation Does a Bright Number on Jupiter's Moon

This illustration of Jupiter's moon Europa shows how the icy surface may glow on its nightside, the side facing away from the Sun

New lab experiments re-create the environment of Europa and find that the icy moon shines, even on its nightside. The effect is more than just a cool visual.

Europa Glows: Radiation Does a Bright Number on Jupiter's Moon