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A brilliant new class of cosmic explosions has been uncovered—so powerful they outshine anything scientists have ever seen.

Find out the fate of Monica Sementilli, who was convicted of murdering her hairdresser husband, Fabio, in 2017.

These cosmic filaments contain 12 trillion solar masses of 10-million-degree gas, helping solve the "missing matter" mystery.

The Event Horizon Telescope captured the first image of the Milky Way galaxy's supermassive black hole Sagittarius A* — our galaxy's "black hole heart." Credit: ESO ...

Authorities considered the possibility that Roy had just wanted to disappear, but the Tennessee Bureau of Investigation ...