Just recently on the blog I posted a series of images of Jupiter taken by JWST , some of which showed Jupiter’s faint ring.  I don’t think a lot of people know that all four giant planets in our solar system have rings; Saturn’s are by far the most obvious, but Jupiter, Uranus, and Neptune own a set themselves. As I wrote in that article, Jupiter’s main ring is primarily made of dust, and may be due to small particles impacting the two moons Metis and Adrastea; sunlight would push on the dust particles and remove them rapidly, so they must be replenished on a similar timescale.  But… Jupiter is about three times more massive than Saturn, so its gravity is much stronger. You’d expect it to have a much larger ring system. Why doesn’t it? New research just published puts the blame on Jupiter’s moons. Now, we don’t know exactly what formed Saturn’s rings, but it might either be from comets that get close to the big planet and get disrupted, or from a collision of icy moons.…