Scientists have discovered an ultra-high-energy particle called the 'Amaterasu particle'.

The particle is believed to have originated from beyond the Milky Way galaxy.

It was observed at the Telescope Array cosmic ray observatory in Utah.

The Amaterasu particle rivals the energy of the 'Oh-My-God' particle and is linked to phenomena like black holes and gamma-ray bursts.

Its exact source is unknown but it seems to come from the Local Void, an empty area of space surrounding the Milky Way.

The discovery provides important insights into the mysteries of the universe and raises questions about the origins and nature of cosmic rays.

Astrophysicists hope to expand the observatory to learn more about these ultra-high-energy particles.