Three decades of supernova observations are adding to hints that dark energy may be changing over cosmic time.
Gamma rays from GRB 221009A caused a disturbance in Earth's ionosphere when they hit our planet and were detected by multiple satellites ...
Earth may owe some of its properties to a nearby star that blew up just as the solar system was forming. This pattern, which saw a supernova bubble envelop the sun and shower it with cosmic rays, may ...