The Milky Way’s farthest spiral arms have long been sketched more from motion than measurement. Now three violent explosions ...

First radio detection of polarized light and Faraday rotation in a gamma-ray burst reveals how magnetic fields shape these ...

Astronomers have detected the magnetic signature surrounding a gamma-ray burst afterglow for the first time, opening a new way to study the extreme physics behind these cosmic explosions. The ...

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 ...

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 ...

Add Yahoo as a preferred source to see more of our stories on Google. The cosmic flash, known as GRB 250702B, wasn’t just another gamma-ray burst—it was the longest-lasting one ever recorded, blazing ...

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 U.S. Naval Research Laboratory (NRL), in partnership with NASA's Marshall Space Flight Center (MSFC), has developed StarBurst, a small satellite (SmallSat) instrument for NASA's StarBurst ...

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 ...

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 ...

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 ...

Astronomers have made a series of landmark observations of one of the universe's most violent events. Using the U.S. National ...