Cosmic ray - Wikipedia
Cosmic rays or astroparticles are high-energy particles or clusters of particles (primarily represented by protons or atomic nuclei) that move through space at nearly the speed of light. They originate from the Sun, from outside of the Solar System in our own galaxy, [1] and from distant galaxies. [2] .
Cosmic ray | Definition, Types, Effects, & Facts | Britannica
2024年11月20日 — Cosmic ray, a high-speed particle—either an atomic nucleus or an electron—that travels through space. Most of these particles come from sources within the Milky Way Galaxy and are known as galactic cosmic rays (GCRs).
What are cosmic rays? - University of Chicago News
Cosmic rays are actually particles from space that travel across the universe. They started out as atoms that had their outer layers stripped away and are now just nuclei. They move extremely fast—nearly the speed of light. Trillions upon trillions of cosmic rays hit the Earth every day.
Scientists detect the most powerful cosmic rays ever - Live Science
2024年11月25日 — "This is an important result, as we can conclude that the measured CRe [cosmic ray electrons] most likely originate from very few sources in the vicinity of our own solar system, up to a maximum ...
Cosmic rays: particles from outer space - CERN
Cosmic rays are a form of high-energy radiation that originate from outside our solar system. When they reach Earth, the rays collide with particles in the upper atmosphere to produce a “shower” of particles, including muons. (Image: CERN)
What are cosmic rays? | Space
2023年6月19日 — Cosmic rays are atom fragments that rain down on the Earth from outside of the solar system. They blaze at nearly the speed of light and have been blamed for electronic problems in...
Cosmic Ray Data - National Centers for Environmental Information
Cosmic Rays (CR) constitute a time and spatial variable flux of fully ionized energetic atoms and subatomic particles that continuously permeate the solar system, reaching the Earth with energies of approximately 10 6 to 10 21 electron-Volt (eV).
Cosmic Rays Explained Recently updated - Science Notes and …
2024年6月5日 — Cosmic rays are high-energy particles originating from outer space that travel through the universe at nearly the speed of light. They consist predominantly of protons and atomic nuclei and fall into two main types: primary and secondary cosmic rays.
Cosmic Rays - Introduction - Imagine the Universe!
2017年9月6日 — Cosmic rays provide one of our few direct samples of matter from outside the solar system. They are high energy particles that move through space at nearly the speed of light.
What are cosmic rays? Why do they matter? | | UW–Madison
Cosmic rays are charged subatomic particles that constantly rain down on Earth from all directions. “They’re called rays, but they are actually particles,” explains Stefan Westerhoff, a professor of physics at the University of Wisconsin-Madison, “and they come in a …