Bacon is not something you would normally find at the other end of the universe since there are no pigs there (as far as we know), but there’s a very small, calculable probability that your plate of bacon will disappear and reappear at the opposite end of the universe. While seemingly impossible, the spontaneous disappearance and reappearance of particles happens around you all the time, though usually only to tiny particles like electrons, which is why you don’t see it happening in everyday life. In physics, we call this quantum tunnelling — a concept of quantum mechanics in which the behavior of particles, such as protons, electrons and even smaller ones, are studied.
Technically, anything has the probability of randomly disappearing and reappearing somewhere else, but bacon is more fun to talk about. Unfortunately, the probability of a piece of bacon quantum tunneling somewhere is extremely improbable — every particle that makes up that piece of bacon would have to tunnel to the same place, the same time, and stay in the same organization to still be a piece of bacon when it got there.
The smaller something is, the higher the probability of this quantum tunneling effect successfully taking place. Quantum tunneling is also dependent on distance — the probability is greatest for it to reappear close by where it originally disappeared and gets less probable the farther away from where it disappeared.
It’s more probable that I’ll quantum tunnel to the moon than to the other side of the universe, but this whole concept is a highly improbable event — people don’t go missing one day to eventually reappear on mars.
It’s most probable for a tiny particle, like an electron, to tunnel across a small point in space. This actually happens a lot, and it’s soon going to be a major problem for computers.
Computer circuit boards function through electric currents in transistors. Transistors determine the flow, or non-flow, of these currents, depending on if the transistors are “open” or “closed.” In modern computers, these transistors have gotten smaller, causing the computers themselves to get smaller. The problem is that once these transistors get too small, quantum tunneling will begin to affect the current. Electricity is just the flow of electrons, so if the transistors are too small, the electrons will just tunnel through the transistors even when they are “closed.”
The important thing to take from all this is that there is an extremely microscopic possibility that an alien is questioningly looking at a piece of bacon that disappeared out from under the surprised face of a fat guy here on earth. Science lets me say that truthfully.