High Quality Content by WIKIPEDIA articles! Donald Delbert Clayton (born 1935) is an American astrophysicist. His published works undergird five subfields of astrophysical research: (1) the synthesis of the chemical elements from hydrogen and helium in stars; (2) astronomy of gamma-ray lines emitted from radioactive atoms ejected by exploding stars; (3) evolution of galactic abundances, especially radioactive abundances, during the aging of the Milky Way galaxy in which the sun resides; (4) astronomy of the isotopes of the elements measured in dust grains that condensed from hot gases while those gases were being ejected from stars, and which are found today surviving within meteorites that have fallen to earth; (5) a novel chemical scheme for condensation of carbon grains from hot, radioactive supernova gases containing more oxygen than carbon. Clayton's name is associated today with each of these five subfields of astronomy. He published his research works from five institutions...

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