In 1931, a hoax claimed that Nikola Tesla had created a car powered by a “cosmic energy power receiver,” but was quickly dismissed due to lack of evidence. A young scientist from Ellington ...

In 1991, an experiment detected the highest-energy cosmic ray ever observed. Later dubbed the Oh-My-God particle, the cosmic ray’s energy shocked astrophysicists. Nothing in our galaxy had the ...

Columnist and Space Why I'm choosing dark matter over dark energy - for now at least. Dark matter is my focus these days, but the intractable problems of dark energy and cosmic acceleration are ...

On May 27, 2021, the Telescope Array experiment detected the second-highest extreme-energy cosmic ray. At 2.4 x 1020eV, the energy of this single subatomic particle is equivalent to dropping a ...

Ultrahigh-energy cosmic rays twist and turn on their way to Earth, which has made it nearly impossible to identify the colossal monsters that create them. Physics ... “I’m inclined now to believe they ...

Cosmic-ray observatories such as Auger and the Telescope Array have also found a few hot spots—small, subtle concentrations in the arrival directions of the very highest-energy cosmic rays.

Cosmic cut-off. In searching for the origins of UHECRs, astronomers benefit from a phenomenon called the Greisen-Zatsepin-Kuzmin (GZK) cut-off. This occurs because UHECRs with energies above about 60 ...

Earth has been blasted by the second strongest ultrahigh-energy cosmic ray ever observed. While its origins remain unknown, astrophysicists are pointing the finger at the Local Void, a ...

The detected cosmic ray had an estimated energy of 244 EeV, comparable to the most energetic cosmic ray ever observed (Osaka Metropolitan University/L-INSIGHT, Kyoto University/Ryuunosuke Takeshige) ...

Packing a punch of some 220 million billion electron volts, this particle was around 20 times as energetic as the highest energy cosmic neutrinos seen before, researchers report in the Feb. 13 Nature.