Supernovae
Astronomers using the XRISM satellite have discovered unusually high amounts of chlorine and potassium in the Cassiopeia A supernova remnant, challenging existing models of element production in stars. These odd-Z elements are vital for planet formation and life, suggesting supernovae play a larger role in distributing life's building blocks. The findings could reshape understanding of chemical distribution in the Milky Way.
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Researchers have discovered that tidal forces in tightly orbiting binary white dwarfs generate significant internal heat, causing the stars to expand and reach unexpectedly high temperatures. This phenomenon challenges previous models and could explain the early onset of cosmic interactions like supernovae. The findings come from a study led by Kyoto University.