The First Observation of the Interior of a Star Opens an Unprecedented Window to the Birth of Matter

El Pais

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“The nitrogen of our DNA, the calcium of our teeth, the iron of our blood and the carbon of our apple cakes were created inside the stars in the process of collapse. We are made of the substance of the stars,” proclaimed the American astrophysicist Carl Sagan in his famous book Cosmos almost half a century ago. A team of scientists has now managed to contemplate for the first time those star entrails, the chaotic forge in which the chemical elem…