The most powerful cosmic-ray electrons and positrons ever detected slamming into Earth's atmosphere carry energies so high they can only have come from relatively close by, new research has revealed.

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Scientists have recently identified electrons and positrons with the highest energies ever recorded on Earth. They provide evidence of cosmic processes emitting colossal amounts of energy, the origins ...

Alfredo has a PhD in Astrophysics and a Master's in Quantum Fields and Fundamental Forces from Imperial College London.View full profile Alfredo has a PhD in Astrophysics and a Master's in Quantum ...

The Universe teems with extreme environments, ranging from the very coldest temperatures to the highest energy sources possible. As a consequence, extreme objects such as supernova remnants, pulsars ...

Just beyond the reach of charged particles from our Sun (which is, in some ways, the edge of our solar system), the Voyager spacecraft have witnessed a previously-unseen phenomenon for the first time.

The Auger collaboration, which operates a cosmic ray observatory spanning 3000 km2 (~1158 sq mi) in the Argentine Andes, announces the observation of an unexpected structure in the spectrum ...

Astrophysicists have detected the most energetic electrons ever recorded raining down on Earth. With trillions of times the energy of visible light, these cosmic rays seem to be coming from a powerful ...

Some of the most energetic cosmic rays in the galaxy may come from a surprisingly small source. If Max Planck Institute for Astrophysics researcher Laura Olivera-Nieto and her colleagues are right, ...

Electrons released when cosmic rays strike water-ice can provide energy for microbes and facilitate the formation of complex organic molecules.

GREENBELT, Md. – Recent observations from NASA and Japanese X-ray observatories have helped clarify one of the long-standing mysteries in astronomy — the origin of cosmic rays. Outer space is a vast ...