Impossible Physics
If you fell into a black hole and somehow survived the “spaghetti effect” as far as an outside observer you would never “enter” the black hole because as you crossed the event horizon and approached singularity all time would stop and have no meaning. And to the outside observer you would just fade away as light could no longer escape past the event horizon.
You'd Need a Big Baby Name Book
If every star in the Milky Way had a name and someone was to recite those names at the rate of one per second, it would still take them four-thousand years to do it.
Evesdropping
Sound carries so well in the Arctic that on a calm day, a conversation can be heard from 1.8 miles away.