space science

We're all star powder!
The carbon in our DNA, the calcium in our teeth, the iron in our blood, the oxygen in the water we drink is formed in a star that collapses in itself,

From the world, with the naked eye, about 6 thousand stars can be seen; but each galaxy in the world has 100 billion to 1 trillion stars in every dimension. The nuclei of the hydrogen atoms in the stars collide and fuse (thermonuclear reactions) before the helium, and as the process progresses, they become the nuclei of increasingly heavier elements. The big stars that run out of energy complete their life with the violent explosions called supernova, and some of the substances that make up the stars with this explosion are scattered as dust. The next generation of stars and the planets that are circling around them (which is also ours) originate from the ashes enriched with the heavier elements of the supernovae. So, the origin of our being, like the Sun and our Earth, is cosmic dust and the famous astronomer Carl Sagan wants to underline this truth by saying, "We are all stars!"