Small gravitational disturbances inside this plasma tried to draw the matter into clumps, but radiation pressure from the energetic photons fought back. (sciencemag.org)
Their rakish tilt may be the result of gravitational disturbances from a companion star, perhaps in combination with the influence of another planet that got tossed out of the system entirely. (discovermagazine.com)
Each pass carves a channel through the ring material, the team found, and the resulting gravitational disturbance contributes to the clumps and twists. (sciencemag.org)