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 Radiation: Why We Should not be Worried | IAEA
2021年4月12日 · Cosmic radiation is what it sounds like: radiation from space. In this article, we explore what it is, why we are protected from it on Earth, how it affects people in specific jobs, and how it can even help advance technology for cancer treatment.
Facts About Radiation from Space (Cosmic Radiation)
2024年2月20日 · Cosmic radiation consists of high-energy, charged particles (x-rays and gamma rays) produced in space. Charged particles react with the earth's atmosphere to produce secondary radiation which reaches the earth. Cosmic radiation is …
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.
Why Space Radiation Matters - NASA
2017年4月13日 · Galactic Cosmic Radiation (GCR) is a dominant source of radiation that must be dealt with aboard current spacecraft and future space missions within our solar system. GCR comes from outside the solar system but primarily from within our Milky Way galaxy.
Cosmic Radiation | US EPA - U.S. Environmental Protection Agency
2024年10月28日 · Radiation from space is called cosmic radiation, which is constantly hitting the Earth. Our solar system’s Sun and other stars in the galaxy emit a constant stream of cosmic radiation. In the United States, a person gets about 5% of their annual radiation exposure from cosmic radiation.
Cosmic ray | Definition, Types, Effects, & Facts | Britannica
2024年12月26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? | Space
2023年6月19日 · Cosmic rays are energetic subatomic particles produced by naturally occurring particle accelerators in outer space. They span a huge range in energies and a variety of types of...
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.
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).