A radio signal that could be a key laboratory for gravity Astronomers have reported a radio signal discovered very close to the Galaxy’s central supermassive black hole that could be a pulsar — a rapidly rotating neutron star that emits regular radio pulses. If the object is confirmed to be a pulsar and is indeed orbiting near the black hole, it would provide a rare, precise clock orbiting in an extreme gravitational field. Why this would be important Precision tests of general relativity:…
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