The Universe is in a continuous evolution. Heavy elements are formed by dead stars which have ended their lives as Supernovas.
In the image you can see the Crab Nebula which was seen in 1054 by the arabs and chinese astronomers. The Crab Nebula is 6500 light years away from us which represents 1/20 of the diameter of the Milky Way, our own galaxy. continue reading…
