All visible objects in the Cosmos, from planets to galaxy superclusters, emit some kind of radiation.
This radiation is energy that travels through space. The light we see is a small part of that radiation, which our eyes can perceive.
There are (that is, we know) two types of cosmic radiation: the electromagnetic radiation and the cosmics rays.
It is the energy emitted by celestial bodies and travels through space in the form of waves. It travels at the speed of light.
Electromagnetic radiation is, along with matter, the other major component of the Cosmos. It includes radio waves, microwaves, infrared waves (heat), visible light, ultraviolet rays, X-rays and gamma rays.
Our atmosphere protects us from the highest energy electromagnetic radiation: gamma rays, X-rays and part of ultraviolet rays. Otherwise, life on Earth would not be possible.
Cosmic rays or corpuscular radiation are not waves, but particles charged with energy, such as neutrinos. The stars emit rains of particles that cross space at high speed. Cosmic rays carry the highest energy load known in the Universe.
Our Sun emits cosmic rays that reach Earth. Earth's magnetic field deflects most. But they are so powerful that a small part gets into the atmosphere and through it. Sometimes, charged particles pass into the upper layers of the atmosphere through the Poles, and form the auroras.
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