Only at the death of stars all the other atoms of the table of the periodic system get created and blown out into the universe as stardust. Intelligent beings - which contain these rare materials (e.g. carbon) - can only be made of stardust!
All visible things in the universe, the stars, the planets, the dust and all the galxies, together total less than 0,5% of what's actually out there.
We have now a new theory of the universe, according to which allmost everything in the universe is made of two invisible things: Dark Matter and Dark Energy.
(Picture of Cosmic Density Pyramid from new-universe.org)
We are made out of stardust, but stardust wouldn't exist without dark matter. The gravity of the dark matter pull ordinary matter into the centres of the forming galaxies and there the ordinary matter forms stars, and stardust and planets and ultimately us.
Look at this fascinating fly-through of the Bolshoi-Simulation produced by the biggest NASA computer. This highly accurate computer simulation represents the density of dark matter in our observable universe.
(For further information visit new-universe.org)
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