A second Great Spot has been discovered on Jupiter by University of Leicester astronomers, rivaling the scale of the planet's famous Great Red Spot and created by the powerful energies exerted by the great planet's polar aurorae.
The European Space Agency (ESA) has just published a striking picture of Europa, Jupiter's icy moon. In the image the surface looks like shattered glass; it reveals many interlocking cracks in the moon's icy crust which were formed by an ocean below the moon's surface. Now a team from NASA's Jet Propulsion Laboratory (JPL) led by planetary scientist Kevin Hand has identified the cracks as sea salt.