For more than ten years, astronomers have observed an enigmatic gamma glow coming from the heart of our Milky Way. Known as ...

New research has failed to rule out self-annihilating dark matter as the source of a gamma-ray emission radiating from the heart of the Milky Way.

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 ...

Most people interpret radiation as a bad thing—but it isn’t always. In fact, radiation is a very normal phenomenon. For now, let’s just say that radiation is when an object produces energy. When a ...

In the 1990s, NASA satellites built to spot high-energy particles coming from supernovae and other celestial-sized objects discovered a surprise—high energy gamma radiation bursts coming from right ...

In the public imagination, lightning is already a powerful force, capable of splitting trees and igniting wildfires. But to ...

Solar physicists say they have found a key source of intense gamma rays unleashed when Earth's nearest star produces its most violent eruptions. In findings published in Nature Astronomy, scientists ...

M87 was the first black hole to be imaged, and now it's revealing details of how some elementary particles are accelerated by the universe's most extreme environments. Reading time 2 minutes A group ...

Everything on the electromagnetic spectrum has some properties of both waves and particles, but it’s difficult to imagine a radio wave, for example, behaving like a particle. The main evidence for a ...

There appear to be too many gamma rays coming from the sun. New higher-energy measurements reveal that this excess continues for a bit, then disappears — a cutoff that could help clarify what’s going ...