When we ever look up at the sky at night, we are usually only aware that we are part of the universe and that we are in the universe. But far more astonishing is the fact that the universe is within us. Therefore, when you look at the sky and feel small - because we humans are small, and the universe is infinitely large - we should really feel big, because our atoms came from the stars. From the stars that, when they disintegrated like a dandelion that we "blow", scattered their core across the galaxy. The core is rich in oxygen, carbon, nitrogen and other ingredients important for life.