Gravitational wave detectors have "heard" the ripples in space caused by the most massive black hole merger yet. One "forbidden" by current theoretical models.

Gravitational waves reveal most massive black hole merger ever detected — one 'forbidden' by current models

Source: space
Source Link: https://www.space.com/astronomy/black-holes/gravitational-waves-reveal-most-massive-black-hole-merger-ever-detected-one-forbidden-by-current-models