An international team of astronomers has analyzed the data from long-term multiwavelength monitoring of a distant blazar ...

A research team has successfully imaged a nova in high resolution—and the images suggest that the nova was not a single, impulsive explosion. A nova is an astronomical phenomenon that occurs in a ...

"A lot of the work that's currently being done in this field is looking at alternatives to lead for gamma protection," said Terry Thiem.

More information about a mysterious, energetic burst, formally known as a gamma-ray burst (GRB), spotted in space 13 billion light-years away from Earth, has been unveiled. The first sighting of this ...

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

An X8.2 class solar flare flashes in the edge of the Sun on Sept. 10, 2017. This image was captured by NASA's Solar Dynamics Observatory and shows a blend of light from the 171 and 304 angstrom ...

Watch an animation of a black hole shooting jets of particles through a "collapsing star at nearly the speed of light" and emit "x-rays and gamma rays (magenta)," according to NASA's Goddard Space ...

Astronomers have employed the Very Energetic Radiation Imaging Telescope Array System (VERITAS) to observe a mysterious gamma-ray emitting source designated HESS J1857+026. Results of the ...

Physicians rely on nuclear medicine scans, like SPECT scans, to watch the heart pump, track blood flow and detect diseases hidden deep inside the body. But today's scanners depend on expensive ...

A space explosion detected this summer burned for days on end, making it the longest and most unusual gamma-ray burst ever seen. Gamma-ray bursts are the universe’s most powerful explosions. They ...

It’s the greatest cosmic murder mystery of the year: How did a black hole destroy a star—and what kind of black hole is the culprit? Normally, so-called “gamma ray bursts,” sudden flashes of extremely ...

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