👉 A gamma ray, also known as a gamma ray burst or gamma ray burst, is an energetic particle that has been observed in space. These particles are extremely high-energy cosmic rays and can be detected using instruments like telescopes. The term "gammaroid" refers to the gamma-ray bursts that occur near the Earth's surface. The term was coined by astronomer Carl Sagan in 1970, and it is a term used for both the gamma ray burst itself and its aftermath