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Our Sun is a rather obvious source of visible light. But it also glows in radio waves, infrared, ultraviolet light and X-rays. Some objects emit only radio waves or only X-rays. This is why it is important to study the Universe with various kinds of space observatories.
- Artist's Impression of a Gamma-Ray Burst
The spacecraft has also confirmed the existence of a new...
- The Electromagnetic SPECTRUM
Gamma rays (wavelengths less than 0.01 nanometres) Gamma...
- Merging Black Holes
Artist's impression of two black holes as they spiral...
- Supernova Explosion
The Integral measurements suggest that a belt of gas from...
- Artist's Impression of a Gamma-Ray Burst
Nov 3, 2024 · A gamma ray is electromagnetic radiation of the shortest wavelength and highest energy. Gamma-ray radiation has wavelengths generally smaller than a few tenths of an angstrom (10 meter), and gamma-ray photons have energies greater than tens of thousands of electron volts.
- Gamma rays are produced during the disintegration of radioactive atomic nuclei and the decay of certain subatomic particles. Gamma rays are also pr...
- The term gamma ray was coined by British physicist Ernest Rutherford in 1903, following early studies of the emissions of radioactive nuclei.
- Medical applications of gamma rays include the imaging technique of positron emission tomography (PET) and radiation therapies to treat cancerous t...
Gamma rays have enough energy to cause damage to living tissue, but almost all cosmic gamma rays get blocked by Earth’s atmosphere. They are highly penetrating and interacts with matter through ionization via three processes: photoelectric effect, Compton scattering, or pair production.
A gamma ray, also known as gamma radiation (symbol γ), is a penetrating form of electromagnetic radiation arising from the radioactive decay of atomic nuclei. It consists of the shortest wavelength electromagnetic waves, typically shorter than those of X-rays.
Dec 28, 2022 · Gamma rays are high-energy photons produced by some of the most violent events in the universe. We explore this powerful radiation in more detail here.
Nov 23, 2019 · Gamma rays might make you think of cancer, harmful radiation or superheroes. But gamma rays have lots of uses: food safety, manufacturing and even medicine!
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Aug 10, 2016 · Gamma-ray bursts are the most energetic and luminous electromagnetic events since the Big Bang and can release more energy in 10 seconds than our Sun will emit in its entire 10-billion-year expected lifetime! Gamma-ray astronomy presents unique opportunities to explore these exotic objects.
