When Giants Collide: How Planetary Impacts Can Make Planets Ring Like Bells

Zanazzi et al. show that giant impacts on young gas giants can trigger seismic oscillations lasting millions of years. These vibrations, especially from low-order pressure modes, may cause detectable brightness changes. The study suggests JWST could observe such signals in planets like Beta Pictoris b, offering a new way to study planetary interiors and past collisions.