Chord after relaxing chord, interspersed with birdsong, rain sounds, or crackling fire? Well, Europa is that, but in video ...

Europa's frozen, fissured surface, seen here in a colorized mosaic image from the Galileo spacecraft, hides a liquid ocean that may hold all the ingredients needed for life. Three key ingredients ...

On Oct. 14, NASA's Europa Clipper spacecraft began a vital mission. It will be investigating the potential habitability of Jupiter's icy ocean moon Europa — but first, it has to get there.