Researchers have completed the major construction of the Gamma-Ray Energy Tracking Array (GRETA), a next-generation nuclear detector designed to deliver the most precise measurements yet of atomic ...

"They allow us to see back to the earliest times that stars existed." When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. Breaking space news, the ...

Theoretically, if one of these gamma-ray bursts happened within 1,000 light-years of Earth, it could wipe out all life on our planet. When you purchase through links on our site, we may earn an ...

Thunderstorms are far more radioactive than previously thought, routinely producing gamma rays—the highest-energy form of electromagnetic radiation typically associated with supernovas and other ...

Today, the European Space Agency's gamma-ray telescope ends its observations. During its 22 years in space, Integral has reshaped our view of the most dramatic events in the universe. The high-energy ...

Above the cloud tops, thunderstorms throb with a complex, frenetic light show of high-energy radiation. A view from a retrofitted spy plane soaring at 20 kilometers up revealed storms glowing and ...