For 7 Hours, a Powerful Space Signal Pulsed Toward Earth — Unlike Anything in Years

For 7 Hours, a Powerful Space Signal Pulsed Toward Earth — Unlike Anything in Years

Astronomers detected GRB 250702B, the longest gamma-ray burst ever recorded, lasting nearly seven hours. Scientists think it may have come from a rare black hole and helium star merger, potentially revealing a new class of cosmic explosions. Credit to : NASA Space News