Eric Walker placed Separation of isotopes by laser excitation (SILEX) under Lasers

Eric Walker updated the time prefix for Separation of isotopes by laser excitation (SILEX) to be "1993"

Eric Walker updated the time prefix for Separation of isotopes by laser excitation (SILEX) to be "2023"

Eric Walker added Separation of isotopes by laser excitation (SILEX) to Isotopes

Eric Walker added Exploding stars may have caused mass extinction on Earth, study shows to Supernovae, Isotopes and Late Devonian extinction

Eric Walker added Exploding stars may have caused mass extinction on Earth, study shows to Isotopes, and added Isotopes to Chemical elements and Nuclear physics and engineering

Eric Walker added a number of topics and We found a new type of stellar explosion that could explain a 13-billion-year-old mystery of the Milky Way's elements and Is It Time to Upend the Periodic Table? - The New York Times to Chemical elements, and added Chemical elements to Chemistry and Atoms, molecules, chemicals, minerals, materials and compounds

Eric Walker added a number of topics and a number of links to Nuclear physics and engineering, and added Nuclear physics and engineering to Engineering and Physics