Our featured article, April 2026: Relativistic ⁵⁶Ni decay lines in GRB 221009A
doi.org/10.1038/s420...
Long Gamma Ray Bursts (GRBs) are linked to the core collapse of massive stars, and in many cases Type Ic supernovae. Here, the authors identify that the time-evolving emission line in GRB 221009A is c...