Cosmic rays coming from outside the Solar System bring these particles closer to the Sun, where they experience changes ...

One can understand that if the earth is a sphere. In fact, from the angle of the sun’s rays from the vertical on June 20 and the distance from Alexandria to Syene he was able to deduce the ...

Cosmic rays are particles from outer space that travel across the universe. They can be made by the sun, by other stars exploding, and even black holes. They move extremely fast, nearly the speed of ...

A massive burst of gamma rays produced by the explosion of ... us against dangerous ultraviolet radiation from the sun. Mass extinctions in Earth’s history may have been caused by something ...