Radioactive sources contain radioactive material of a particular radionuclide (an unstable form of an element emitting radiation), which can vary based on the application for which the source was ...

Cosmic space is filled with continuous, diffuse high-energy radiation. To find out how this energy is produced, the scientists behind ESA’s Integral gamma-ray observatory have tried an unusual method: ...

Deep in the cosmos, an enigmatic object emits gamma rays at energies more than 100 TeV, an intensity far beyond what we typically observe. Discovered in 2021 by the Large High Altitude Air Shower ...

Spanish astronomers have conducted a near-infrared study of an ultra-high energy gamma-ray source designated LHAASO J2108+5157. The new study, published February 11 on the arXiv preprint server, tries ...

The ionizing radiation symbol, featuring three curved blades emanating from a central point, has been used since 1946 to warn workers, scientists and the public of the presence of radioactive material ...

Scientists have discovered a previously unidentified nearby source of high-energy cosmic rays. The finding was made with a NASA-funded balloon-borne instrument floating high over Antarctica.

Most people interpret radiation as a bad thing—but it isn’t always. In fact, radiation is a very normal phenomenon. For now, let’s just say that radiation is when an object produces energy. When a ...

Researchers used the MIRI instrument onboard the James Webb Space Telescope (JWST) to identify the presence of ultraviolet radiation in five young stars in the Ophiuchus region, and to understand its ...

Congress asked the National Academies to review the civilian uses of radiation sources that contain radionuclides and the potential replacements for sources that pose a high risk to public health or ...

Research over the years has found that a black mold, formed from a number of different fungi, has been growing toward radioactive particles, and surviving on ionizing radiation, at the Chernobyl ...

Scientists have developed a new type of handheld multi-purpose radiation detector that comprehensively detects all types of ionizing radiation. The device can be used by industrial and medical ...