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The Amaterasu particle is one of the highest-energy cosmic rays ever detected.

The Amaterasu particle is one of the highest-energy cosmic rays ever detected.

The Amaterasu particle is one of the highest-energy cosmic rays ever detected.

Space scientists seeking to understand the enigmatic origins of powerful cosmic rays have detected an extremely rare, ultra-high-energy particle that they believe traveled to Earth from beyond the Milky Way galaxy.

The detection of such a high-energy cosmic ray—charged particles that travel through space at almost the speed of light—is "exceedingly rare."

Scientists are struggling to explain the appearance on Earth of the previously unknown “Amaterasu particle” during the second-strongest cosmic ray event ever detected.

Astronomers have detected a rare and extremely high-energy particle falling to Earth from space. Named Amaterasu, after the...

Space scientists have detected an extremely rare, ultra-high-energy particle that they believe traveled to Earth from beyond the Milky Way galaxy.

Astronomers observed the second largest cosmic ray ever. Physicists cannot comprehend where in the universe such an energetic ray came from.

The ‘Amaterasu particle’ is the second most powerful particle of its kind ever seen – but researchers do not even really know what it is