Publication
Carl Sagan points out that the nitrogen in our DNA, calcium in our teeth, iron in our blood, and carbon in our apple pies all come from collapsing stars. The author asserts we are made of material formed in those stellar interiors. It connects biological elements to cosmic origins.
2w
17 J'aime0 Je n'aime pas3 Republications0 Commentaires
?
Commentaires
Aucun commentaire pour le moment. Soyez le premier !