After a lonely nine months, Ulysses has a new partner in gamma-ray burst detection. On 21 November, the ESA/NASA spacecraft in orbit high above the Sun’s poles, and Mars Odyssey, NASA’s spacecraft ...

In 2025, astronomers detected a blast from space. Now they’re uncovering the strange processes behind the exceptional ...

Gamma-ray bursts, powerful glares of high-energy that wash through the Universe once every day or so are, for a brief time, the brightest objects in the gamma-ray sky. ESA’s Integral gamma-ray ...

The brilliant afterglow of a powerful gamma-ray burst (GRB) has enabled astronomers to probe the star-forming environment of a distant galaxy, resulting in the first detection of molecular gas in a ...

A stellar explosion that briefly outshone its entire host galaxy may have left behind a calling card no superluminous ...

A multi-sensor detection of an intense gamma-ray flash, which occurs when two lightning leaders collided, has been observed. Observations across a wide radiation spectrum enabled precise measurement ...

Einstein's theory of relativity is based on two assumptions, or postulates. The first is that the laws of physics look the same to everyone traveling in a straight line with no acceleration. Einstein ...

After the collision, researchers pored over the data archives of many telescopes, looking for any signs of light emissions from the origin of the gravitational waves. "We weren't actually expecting to ...

Down here at the bottom of our ocean of air, it’s easy to get complacent about the hazards our universe presents. We feel safe from the dangers of the vacuum of space, where radiation sizzles and ...