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Have you ever been in a loud, crowded room (remember those?) and thought you heard a familiar voice or your name being called? Something just loud enough to perk your ears up but not so loud you can be sure you heard it?
An international team of astronomers is in that same situation right now. Except that the crowded room is the Universe, the people in it are colossal black holes eating each other, the voices are waves compressing spacetime, and instead of ears astronomers are using several dozen pulsars spinning madly across the galaxy.
Right. Let s take a step back.
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An experiment that reaches across our galaxy has detected the first signs of a possible sea of ripples in space-time
An experiment that reaches across our galaxy has detected the first signs of a possible sea of ripples in space-time
Morgan McFall-JohnsenJan 13, 2021, 20:18 IST
An artist s concept of a supermassive black hole surrounded by a swirling disk of material falling onto it.NASA/JPL-Caltech
Scientists might have discovered the first signs of the gravitational-wave background: a sea of ripples in space-time reverberating throughout the universe.
Albert Einstein first predicted the existence of gravitational waves. They have recently been detected following violent collisions of black holes and neutron stars.