Racing across the universe for the last 7.3 billion years, two gamma-ray photons arrived at NASA’s orbiting Fermi Gamma-ray Space Telescope within nine-tenths of a second of one another. The dead-heat ...
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A cosmic surprise: Black hole merger may have sparked a gamma-ray burst
In November 2024, gravitational-wave detectors recorded the violent merger of two black holes billions ...
Mechanism explains how the most energetic form of light can be produced in areas dominated by bright, young stars In 2002, when astronomers first detected cosmic gamma rays — the most energetic form ...
The HESS international collaboration, to which CNRS and CEA contribute, has published the results of fifteen years of gamma ray observations of the Milky Way. Its telescopes installed in Namibia have ...
Add Yahoo as a preferred source to see more of our stories on Google. Purple-toned clouds and two lightning strikes The very moment two electrical currents slam together to form a lightning bolt has ...
Schematics of the all-optical nonlinear Compton scattering experiment showing laser-driven electron acceleration, electron-laser collision, and Compton scattering to produce gamma rays. In a ...
Osaka, Japan – Lightning is a phenomenon that has fascinated humanity since time immemorial, providing a stark example of the power and unpredictability of the natural world. Although the study of ...
Astronomers have detected the highest-energy light ever seen, streaming in from near the center of the Milky Way. Hundreds of gamma ray signals were detected with ultra-high energies, with the most ...
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