cosmic ray


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cosmic ray

n.
A very rapidly moving particle of extraterrestrial origin, especially one that collides with the earth's atmosphere. Cosmic rays are mainly protons and alpha particles but sometimes are other light atomic nuclei and high-energy electrons.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

cos′mic ray′


n.
a radiation of high penetrating power originating in outer space and consisting partly of high-energy atomic nuclei.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.cosmic ray - highly penetrating ionizing radiation of extraterrestrial origin; consisting chiefly of protons and alpha particles; collision with atmospheric particles results in rays and particles of many kinds
ionizing radiation - high-energy radiation capable of producing ionization in substances through which it passes
cosmic radiation - radiation coming from outside the solar system
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References in periodicals archive ?
It's a cosmic ray hit," Doug Ellison, visualization producer at NASA's Jet Propulsion Laboratory, explained over (https://twitter.com/doug_ellison/status/453336252759015424) Twitter .
Cosmic rays are a flow of nuclei of chemical elements--hydrogen (~ 90%), helium (~ 8%), and the nuclei of the heavier elements (~ 2%).
SCIENTISTS have used cosmic rays to discover a secret space inside Egypt's Great Pyramid.
"The sun emits low-energy cosmic ray particles that are detected here on Earth, but they are nowhere near as high energy as the particles detected at the Auger Observatory.
Led by Dr Rafael Rosolem of the department of civil engineering, the three-year Amused (A MUlti-scale Soil moisture-Evapotranspiration Dynamics study) project will combine cosmic ray sensors, land surface modelling, satellite remote sensing, and model diagnostics and data assimilation methods.
In addition to shedding light on our cosmic neighborhood, the results offer an explanation for a decades-old mystery on why we measure more incoming high-energy cosmic rays on one side of the sun than on the other.
Tokyo, Jan 24, 2014 - (JCN Newswire) - Fujitsu today announced that it has completed construction of a new computer system for the Institute for Cosmic Ray Research (ICRR) of the University of Tokyo.
Starting from the 1920s, scientists in the former USSR began to deal with cosmic ray research intensively.
The Inter- Governmental Panel for Climate Change ( IPCC), the UN climate body, needs to take a relook into their future prediction of global warming by factoring in the long term changes in cosmic ray intensity, the paper says.
However, the variations of cosmic ray intensity may be dominated on long-time scales, not by global processes, but by geomagnetic field changes, which affect the cosmic ray access to the Earth (Usoskin 2004).
Germ cell mutagenesis in medaka fish after exposures to high-energy cosmic ray nuclei: A human model.