3 facts
In quantum entanglement, two particles become linked in such a way that the state of one instantly influences the state of the other, no matter how far apart they are. Einstein famously called this "spooky action at a distance," highlighting its counterintuitive nature in quantum mechanics.
These subatomic particles are incredibly tiny, have almost no mass, and interact so weakly with matter that most pass straight through Earth and everything on it without collision. They are produced in stars, supernovae, and nuclear reactions.
Neutrinos are subatomic particles with almost no mass and no electrical charge, making them incredibly elusive. Trillions pass through your body every second, interacting so rarely that a light-year thick wall of lead would only stop about half of them.