Content tagged "gravitational waves".
3 items (3 articles, 0 stories)
Primordial black holes may have formed before the universe was even a second old. Unlike black holes born from dying stars, they could be lighter than the Sun. By 2026, gravitational-wave detectors had logged 390 events — but the one that would prove it still hasn't shown up. SORABUMI explains.
GWTC-5.0, the gravitational-wave catalog released in 2026, shows signs that some merged black holes went on to collide again, producing a 'second generation.' SORABUMI breaks down what happened 700 million and 2.4 billion light-years away, and how spin patterns exposed a hierarchy of mergers.
Two of the universe's most extreme objects collide — and the last few milliseconds of that encounter trace all the way back to the origin of gold and platinum. Gravitational waves have finally let us witness this cosmic clash up close.