You searched for: “cosmic ray
cosmic ray (s) (noun), cosmic rays (pl)
Any of a group of very high-energy particles reaching the earth from outer space or produced in the earth's atmosphere by the particles from outer space.
Word Entries containing the term: “cosmic ray
cosmic-ray telescope (s) (noun), cosmic-ray telescopes (pl)
An instrument used to detect and identify the direction of cosmic rays or the material that results when cosmic rays interact with the atmosphere.
Word Entries at Get Words: “cosmic ray
cosmic ray (s) (noun), cosmic rays (pl)
Nuclear and subatomic particles moving through space at high speeds: Cosmic rays are radiated from the Sun and other stars.

Cosmic rays are streams of ionizing radiations from space, largely of protons, alpha particles, and other atomic nuclei.

Cosmic rays are very high energy nuclei moving at velocities close to that of light which are probably produced by supernova explosions.

On striking the Earth's atmosphere, they produce cascades of other particles (by collision with nuclei in the atmosphere) called air showers.

This entry is located in the following unit: Astronomy and related astronomical terms (page 7)