A supernova is a stellar explosion, which occurs when the lives of some really massive stars come to an end. In this violent epilogue, the star expels the material from its outer layers by means of a shock wave, allowing us to see the various elements it was composed of.
from All Top News -- ScienceDaily https://ift.tt/4EgLO2C
from All Top News -- ScienceDaily https://ift.tt/4EgLO2C
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