The most primitive meteorites also contain a small amount of material (< 0.1%) which is now recognized to be presolar grains that are older than the Solar System itself, and which are derived directly from the remnants of the individual supernovae that supplied the dust from which the Solar System formed.
Cei mai vechi meteoriți conțin – de asemenea – o cantitate redusă (<0,1%) de granule presolare, materie existentă anterior formării Sistemului solar și care derivă direct din resturile supernovelor individuale care au furnizat praful care a format Sistemul Solar.