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Astronomers have discovered two helium burning stars 10,000 ly from Earth!
Stellar evolution. It’s something that, at least in my mind, was hammered into my brain-case at an early age.Over time, stars like our own will burn through their main fuel source, once that happens, they will expand, becoming a red giant, before eventually going through a second expansion where they shed their gassy layers until they become what’s known as a planetary nebula.
Larger stars go through a similar process, but once all of their main fuel source is chewed through, they expand, and then go supernova, leaving behind a stellar remnant known as a white dwarf, neutron star, or even a black hole (well, depending on their size at least).
But the discovery of two stars that have surprised scientists by the fact that they’re actually burning Helium are raising some intriguing questions in regard to our understanding of stellar evolution.So, let’s go ahead and jump right in.
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