realizată de Russell Mallari [Student] 3 ani în urmă
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Space inquiry
Research into the most abundant elements in the universe has its roots in astrophysics, dating back to discoveries made in 1925 by Cecilia Payne-Gaposchkin. Her work revealed that stars are primarily composed of hydrogen and helium, elements that formed shortly after the Big Bang through the combination of protons, neutrons, and electrons.