Nasa discovers the secret to Jupiter’s colour-changing, glowing moon

Europa, one of Jupiter’s moons, glows in the dark as well as the daytime, and changes colours, Nasa has found.

Scientists suggest that radiation coming from Jupiter coasts the moon in electrons and other particles. The salty compounds on the moon’s surface react to this radiation and emits a green, blue, or white light.

Nasa’s Jet Propulsion lab used a spectrometer – a measuring instrument which can separate light into its component colours – to measure how the the reflections on the moon’s icy surface.

It is the same process that was used by scientists to gather information about the $10 quintillion ($10,000,000,000,000,000,000) asteroid that is floating between Mars and Jupiter, as well as finding the Moon’s potential long-lost twin.