Electrons are the ultimate survivors of the subatomic world.

Electrons are the ultimate survivors of the subatomic world. Their minimum possible lifespan is an astonishing 66,000 yottayears — a timescale so immense that it is effectively eternal by any human standard.To put this in perspective, the electron’s lower limit on longevity is at least 5 quintillion times longer than the current age of the universe. While the cosmos has existed for roughly 13.8 billion years since the Big Bang, electrons are expected to endure for a duration that makes that entire cosmic history seem like the briefest of moments.This extraordinary stability forms the very foundation of physical reality. It ensures that atoms remain intact and matter itself stays consistent across cosmic timescales.The reason for this near-immortality lies in the fundamental laws of physics, particularly the strict conservation of electric charge. As the lightest known particle carrying a negative charge, the electron has no lighter particle it can decay into without breaking those core laws. Despite decades of high-precision experiments — including those using the sensitive Borexino detector — no evidence of electron decay has ever been observed. Many physicists now consider electrons to be perfectly stable, potentially lasting forever.As long as the laws of physics remain unchanged, electrons will continue to provide an unchanging, permanent foundation for the universe we inhabit.Science and facts💡