The Sun’s most violent flares are turning out to be even more extreme than I, or many solar physicists, had imagined. By ...

By tracing solar flare gamma rays, scientists gain new insight into particle behavior that shapes space weather forecasts.

On 2 July 2025, NASA’s Fermi Gamma-ray Space Telescope observed a gamma-ray burst (GRB 250702B) of a record seven hours in ...

In October 2022, astronomers were stunned by what was quickly dubbed the BOAT — the brightest-of-all-time gamma-ray burst (GRB). Now an international science team reports that data from NASA’s Fermi ...

Scientists have been all aflutter since several space-based detectors picked up a powerful gamma-ray burst (GRB) in October 2022—a burst so energetic that astronomers nicknamed it the BOAT (Brightest ...

When a high-energy electron beam collides head-on with an intense laser pulse, the electrons scatter the light and emit ...

For nearly a century, dark matter has been the invisible scaffolding of the universe, inferred from its gravitational pull but never directly seen. Now a cluster of independent results, from subtle ...

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 ...

Gamma-ray bursts (GRBs) are intense, transient cosmic events, typically originating from massive stellar collapses or mergers of compact objects, which serve as crucial probes for understanding the ...

The International Gamma-ray Astrophysics Laboratory (INTEGRAL), a space-science mission led by the European Space Agency, launched successfully on October 17, 2002, from the Baikonur Cosmodrome in ...

The brightest gamma-ray burst yet recorded gave scientists a new high-energy feature to study. Learn what NASA’s Fermi mission saw, and what this feature may be telling us about the burst’s ...