Saturn rings a 'recent' addition to solar system: NASA study
Scientists analysing data from NASA's Cassini spacecraft, which was recently crashed into Saturn's atmosphere, suggest the planet's rings are under 200 million years old, relatively "young" when compared to the solar system's age of 4.5 billion years. Scientists are currently uncertain if the rings formed due to a gravitational tug-of-war between Saturnian moons or collisions with an asteroid.