If black holes trap everything, what if there were something that did the exact opposite? Enter white holes, the hypothetical cosmic phenomena that might expel matter and energy instead of absorbing ...

The bold question-askers at What If imagine the cosmic consequences of a collision between a black hole and a white hole. Rock the Country festival: Artists dropping out amid Kid Rock controversy ...

(via Sabine Hossenfelder) White holes are theoretical bodies in physics that are basically time-reversed black holes, meaning instead of permanently trapping matter inside themselves, they release it ...