A nearby supernova in 2023 offered astrophysicists an excellent opportunity to test ideas about how these types of explosions boost particles, called cosmic rays, to near light-speed. But surprisingly ...

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 ...

All three versions of AstroPix sensor chips are on display from the oldest on the left to version 3 on the right. Version three, which began testing in April 2023 has bigger pixels and improved ...

It's a celestial event that has astronomers both excited and puzzled. Dan Smith has the story of how a gamma-ray burst across ...

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 ...

NASA’s Hubble Space Telescope captured this view of spiral galaxy Messier 101, also known as the Pinwheel galaxy. The location of supernova 2023ixf is circled. On May 18, 2023, a supernova erupted in ...

The burst seems to have been caused by a highly extraordinary event, but scientists don’t yet know exactly what that could be ...

The researchers think that infrared light particles (photons) from the poles of the pulsar are boosted to gamma-ray energies (blue) by fast electrons. Scientists using the H.E.S.S. observatory in ...