Galactic origin of life. Artwork of the limb of a spiral galaxy turning into the double helix structure of a strand of DNA surrounded by green chemical structures and X-shaped chromosomes (genetic material). DNA (Deoxyribonucleic Acid) is a complex organic chemical which is the building block of life. The chemicals needed to make DNA (carbon,oxygen,nitrogen & others) were made by the fusion of hydrogen and helium nuclei in the hearts of stars. These were ejected into space when these stars exploded as supernovae. Ultra- violet light from other stars promoted the combin- ation of these elements into complex organic chem- icals which may have initiated life | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Cook, Lynette |
Taille de l’image : | 3400 px × 5032 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |