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A simulation of a black hole Hotaka Shiokawa/EHT General relativity teaches us that reality is, in some sense, a matter of perspective. Consider how someone who is “falling” into a black hole sees something completely different to an observer trying to watch that someone cross the event horizon, a black hole’s edge. The person actually […]
We can detect signals from black holes merging – but could we also pick up traces of more exotic collisions? VICTOR DE SCHWANBERG / SCIENCE PHOTO LIBRARY Gravitational wave signals that seem to emanate from black hole collisions may actually come from the clashes of odd, exotic stars – which have been theorised but may […]
Gravitational wave detectors use laser beams in tubes that span kilometres The Virgo Collaboration Gravitational waves that span thousands to billions of miles can be obscured in our detectors by the smallest of quantum fluctuations that permeate space-time. But now, researchers at the Laser Interferometer Gravitational-Wave Observatory (LIGO) have found a way to beat this […]