[DOC] [TLE] Cosmic rays: particles from outer space | CERN [PAR] He concluded that penetrating radiation was entering the atmosphere from above
. ... Earth is subject to a constant bombardment of subatomic particles that can ... 
These high-energy particles arriving from outer space are mainly (89%) ... The 
charged pions can swiftly decay, emitting particles called muons. ... Search form. [DOC] [TLE] Cosmic ray - Wikipedia [PAR] Cosmic rays are immensely high-energy radiation, mainly originating outside the 
Solar System. Upon impact with the Earth's atmosphere, cosmic rays can 
produce showers ..... Of these four, the latter three were first detected in cosmic 
rays. ... When cosmic rays enter the Earth's atmosphere they collide with atoms 
and... [DOC] [TLE] Muons, pions and other strange particles | New Scientist [PAR] Aug 4, 1990 ... Cosmic rays  high-energy particles (mainly protons) from outer space  
bombard atoms in the upper atmosphere, causing spectacular ... The debris from 
these collisions includes particles that are too short-lived to form a substantial 
part of ... Sign up to our newsletter Enter your email address to get started. [DOC] [TLE] CurioCity - CurioCit | Cosmic & Neutron Radiation [PAR] Jan 28, 2013 ... Primary cosmic rays originate from a variety of sources, including ... As these 
particles continue to accelerate, some can travel close to the speed of light. ... For 
example, when primary cosmic rays enter the Earth's atmosphere, they collide ... 
neutrons, positive and negative pions (short for pi mesons  a type... [DOC] [TLE] Cosmic Rays - Richard Mewaldt - Space Radiation Lab, Caltech [PAR] Cosmic rays are high energy charged particles, originating in outer space, that 
travel at nearly the speed of light and strike the Earth from all directions. ... He 
attributed this to a source of radiation entering the atmosphere from above, and in 
... Although these applications continue, since the dawn of the space age the 
main... [DOC] [TLE] Cosmic Ray Muon Physics - Bellarmine University [PAR] As shown in Figure 1, one type of cosmic ray that strikes the earth is a muon. (). 
... The history of cosmic rays started in the beginning of the 20th century. In 1912 
... generally be defined as all particles that come to earth from outer space. ... 
Some of these muons can make it through the Earth's atmosphere which can be. [DOC] [TLE] Cosmic rays | Article about cosmic rays by The Free Dictionary [PAR] On entering the Earth's atmosphere the great majority collide violently with atomic 
nuclei in the atmosphere producing secondary cosmic rays; these consist mainly 
of ... The large number of particles produced from one such collision form an ... 
that is incident on the earth from outer space (primary radiation), as well as the... [DOC] [TLE] Ionizing Radiation in Earth's Atmosphere and in Space Near Earth [PAR] This report addresses one of these hazards  ionizing radiation. Ionizing 
radiation ..... protons, alpha particles, pions, muons), and (b) photons, ... he called 
X-rays, penetrated the wall of the carton and trav- ... Earth's Magnetic Field) may 
enter the atmosphere and .... and outer space is 100 km (328 kft) above Earth's 
surface. [DOC] [TLE] Radiation astronomy/Cosmic rays - Wikiversity [PAR] Main sources: Radiation astronomy/Cosmic rays and Cosmic-ray astronomy .... 
However, pion production events drain 20% of the energy of a cosmic ray proton 
as ... While these may not seem like astronomical gamma-ray sources, cosmic 
rays ..... When cosmic rays enter the Earth's atmosphere they collide with 
molecules,... [DOC] [TLE] LISTENING FOR COSMIC RAYS ! - bartol neutron monitors [PAR] Oct 12, 1999 ... These are tiny particles that enter the Earth's atmosphere at nearly the ... It is one 
of many around the world that detect cosmic rays from outer space. .... Pions are 
particles with more mass than an electron, but less than a proton. ... The Sun 
continually expels matter (in the form of solar wind plasma) and... [DOC] [TLE] Cosmic Rays - Physics [PAR] Charged particles produced

Question: Pions are a type of these "rays" from outer space that enter the Earth's atmosphere
Answer: cosmic rays