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TESS Observes Unusual Type Ia Supernova: ASASSN-18tb



Astronomers have used NASA’s Transiting Exoplanet Survey Satellite (TESS) to see what was happening around the supernova ASASSN-18tb in the first moments after it exploded — an unprecedented opportunity. ASASSN-18tb is a Type Ia supernova, a type of stellar explosion that can occur when two stars orbit one another — what astronomers call a binary […]



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