Gamma rays are the shortest wavelength electromagnetic ... which protects us against dangerous ultraviolet radiation from the sun. Mass extinctions in Earth’s history may have been caused ...

"The gamma-ray burst traveled through intergalactic space at the speed of light for eleven billion years, during which time the Sun and the planets were born." — Timothy Ferris, in the film ...

WEST LAFAYETTE, Ind. -- An international team of astronomers has observed extremely rapid bursts of high-energy gamma rays from a distant galaxy, an observation that is challenging how astronomers ...

Highly energetic explosions in the sky are commonly attributed to gamma-ray bursts. We now understand that these bursts ...

Gamma-ray bursts (GRBs) Gamma-ray bursts (GRBs ... While GRBs hitting Earth is only a hypothesis, it could be dangerous to the atmosphere and damage the ozone layer, making life vulnerable ...

The ionizing power of gamma rays is low, but they are difficult to stop and travel long distances. The degree to which each different type of radiation is most dangerous to the body depends on ...

An isotope emits gamma rays that easily pass through the body to a detector outside the body, for example a ‘gamma camera’. In this way, the radioactive isotope can be followed as it flows ...

That gamma rays under certain experimental conditions appear to become less penetrating as they pass through matter was shown by Dr. Gray in 1913. Recently it has been shown by me (Phil.

As a result, they detected increased gamma-ray activity from this source, including a strong outburst. The finding is reported in a research paper published on the arXiv preprint server.

This site presents the energy and photon intensity of gamma rays as seen in thermal-neutron capture in two tables, one in ascending order of gamma energy and a second organized by Z, A of the target.