Earlier research had found that the rings of Saturn respond to vibrations within the planet. Saturn's interior vibrates at frequencies that cause slight variations in its gravitational field, and the ...

Jupiter isn’t alone in this category; Saturn, Uranus, and Neptune are also gas giants, though Uranus and Neptune are often ...

Cave of El Castillo, Spain Some of the oldest known paintings in the world are in the Cave of the Castle, in Cantabria in the north of Spain. Thought to be more than 40,000 years old, many of the ...