Once upon a time, Earth may have sported a planetary ring of its very own. The hypothetical ring didn't last long, cosmically speaking – just a few tens of millions of years. But that was long ...

Dr. Tiscareno studies how things move (dynamics) in the solar system. In many cases, he applies dynamical methods to Saturn’s rings and other planetary ring systems. He is a Participating Scientist ...

Using the James Webb Space Telescope (JWST), astronomers have observed enigmatic rings in the planetary nebula NGC 1514, ...