The sun is now experiencing a second mode of fusion, as scientists discover the presence of neutrinos in its energy range. Stars actually have different kinds of fusion reactions at their cores, so there’s no surprise that the sun is getting another fusion. It’s the detection that’s difficult, as Popular Mechanics detailed:
But detecting the evidence of different kinds of reactions is difficult. Enter neutrinos, which are lightweight, neutral subatomic particles that can pass through matter almost without any evidence. This is because of their physical properties and the fact that they respond to the weak, rather than strong, force of physics in our universe. (In a colloquial sense, the furthest extension of the weak interaction of neutrinos is something like dark matter, which scientists believe is mingling around us all the time without disturbing our matter.)
Image via Popular Mechanics
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