The crack of lightning has always seemed straightforward — clouds build up electric charge, and eventually, it snaps. But the chain of events that lights the sky has remained an atmospheric puzzle for ...

A lead halide material can detect and image single gamma-ray photons with both high-spatial and high-energy resolution ...

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High energy scans or the body looking for tumors or infections could be greatly improved by adopting perovskite detectors instead of the fragile or low-resolution options currently in use, a new study ...

According to quantum mechanics, light can scatter light. Just like any other elementary particles, the particles of light – photons, can collide with each other. And if two photons carry enough energy ...

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, ...

Scientists have detected the highest energy gamma rays ever from a dead star called a pulsar. The energy of these gamma rays clocked in at 20 tera-electronvolts, or about ten trillion times the energy ...

Once in orbit, space telescopes can produce heavenly pictures. ESA’s new gamma-ray observatory INTEGRAL – just a year away from launch – will be focusing on some of the highest energy celestial ...

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"Fermi is the most sensitive gamma-ray telescope in orbit, so when it doesn’t detect an expected signal, scientists must explain the absence." When you purchase through links on our site, we may earn ...