X-rays have even shorter wavelengths and are used by doctors to see inside our bodies. Gamma rays have the shortest wavelengths. They are produced by nuclear reactions and are used to treat cancer.

On the other side of the spectrum, light with wavelengths slightly shorter than 380 nanometers is known as ultraviolet. Beyond that come X-rays and beyond that still come gamma rays.

Light of any wavelength, from picometer-wavelength gamma-rays to radio waves more than a trillion times longer, all move at the speed of light in a vacuum.

While its gamma-ray spectrum resembles that of a pulsar, pulsations have not been detected, and it isn’t associated with a known object at other wavelengths. The top five sources beyond our ...

The SGRB is called GRB 211106A and its gamma-rays were spotted in 2021. Now, Tanmoy Laskar and colleagues have used the Atacama Large Millimetre/submillimetre Array (ALMA) radio telescope in Chile to ...

And while lasers can now produce coherent light in the visible, ultraviolet, and x-ray ranges of the electromagnetic spectrum, doing so beyond the x-ray range—which is where gamma rays exist ...

A new method to exploit Gamma-Ray Bursts (GRBs), the most energetic explosions in the universe, as independent measurements of the Universe’s expansion rate has been discovered in optical ...

The most distant gamma-ray burst yet found glows at X-ray wavelengths in this image from the Swift space telescope Astronomers have detected the most distant gamma-ray burst ever found. The cosmic ...

Nature Photonics spoke to Kim Ta Phuoc about an extremely bright and compact X-ray and gamma-ray source that exploits laser plasma acceleration and Compton scattering simultaneously.

NASA's Neil Gehrels Swift Observatory was peering through eons and eons in September 2021 when it spotted a dramatic explosion, a gamma-ray burst that had gone off in the early universe.