The cosmic explosion that wouldn't quit. Strange signal from deep space baffles astronomers

The cosmic explosion that wouldn't quit. Strange signal from deep space baffles astronomers


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Mystery explosion: astronomers have detected a massive gamma-ray burst named GRB 250702B that defies current scientific understanding

Extreme distance: the event occurred several billion lightyears away from our Galaxy, indicating the explosion was incredibly powerful

Unprecedented duration: while most of these bursts last only milliseconds or minutes, this specific event continued for an entire day

Periodic activity: the burst showed repeated and periodic power surges, a phenomenon never before seen in 50 years of observations

Star destruction: gamma-ray bursts usually signal the one-time destruction of a star, making this repeating signal particularly baffling

Deep space: observations from the Very Large Telescope in Chile helped confirm the burst's origin deep in the distant universe

Stellar collapse: one theory suggests a massive star collapsed in a way never witnessed before, to release such sustained energy

Black hole: another possibility involves a star being ripped apart by a black hole, though the details would require a very unusual pairing

Future study: this unique event is forcing researchers to rethink the mechanics behind the most violent explosions in the cosmos


An artist's impression of a gamma ray burst. Credit: ESA/Hubble, M. Kornmesser
Credit: ESA/Hubble, M. Kornmesser

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