The next destination for NASA’s New Horizons spacecraft is a small space rock in the Kuiper belt called MU69. Now we know it may have an even smaller moon
A series of parallel lines on Saturn’s moons Dione and Rhea have scientists scratching their heads. Could they be a sign of rings that crashed to the surface?
The way spaceships vent urine and water may be a good stand-in for studying how jets of vapour escape the hidden ocean on one of Saturn’s icy moons
The gravity from seven of its moons stops Saturn’s bright outer ring from spreading out and dispersing into space, according to Cassini spacecraft measurements