Cosmic radiation

Let us learn about "Cosmic radiation"

Cosmic radiation is a collection of many different types of radiation from many different types of sources. When people speak simply of 'cosmic radiation' they are usually referring specifically to the cosmic microwave background radiation. This consists of very, very low energy photons (energy of about 2.78 Kelvin) whose spectrum is peaked in the microwave region and which are remnants from the time when the universe was only about 200,000 years old. There are also very old remnant neutrinos in the cosmic radiation. Neutrinos pass through just about everything with no effect so they are harmless. The photons are too low in energy to be dangerous.





Cosmic radiation is the source of natural background radiation. It is originated in outer space and is composed of penetrating ionizing radiation. The sun and stars emits a constant stream of cosmic radiation that reaches Earth. Differences in Elevation, atmospheric conditions, and the Earth's magnetic field are the factors which changes the amount of cosmic radiation that we receive.