Science ❯ Astrophysics ❯ Stellar Evolution

Black Holes

Helium Merger Model Tidal Disruption Events Helium Star Mergers Second Generation Black Holes Massive Stars

Record-Setting Day-Long GRB 250702B Confirmed at z = 1.036 as Origin Remains Unsettled

JWST pins the distance at z = 1.036, leaving an extreme energy budget that no single progenitor model yet accounts for.

Simulations Predict Roman Telescope Will Record About 100,000 Cosmic Explosions