Thomas F. M. Spieksma

Black holes usually reflect some waves. By shaping these waves to hit a precise resonance, physicists forced a black hole to absorb all energy, turning perfectly black. The absorbed energy is then released as a distinct ring, like a bell's tone revealing its shape. This technique could unveil the se

Clouds of ultra-light particles turn black holes into gravitational atoms. New calculations show that after black hole mergers, such clouds noticeably change their ring, which can be detected by gravitational wave detectors.

When two black holes orbit each other, they act like a boat with oars: they fling away passing stars and push themselves. This not only brings them closer but also causes the pair to shift, spin, and tilt. This explains why supermassive black holes are sometimes found far from the centers of galaxie