“Black holes are cosmic vacuum cleaners that suck everything in”

It's a common misconception that black holes are insatiable cosmic vacuum cleaners, relentlessly hoovering up everything in their path. This vivid image often stems from early science fiction portrayals and simplified explanations that emphasize their immense gravitational pull without fully detailing the conditions under which objects are captured. The dramatic nature of a black hole's gravity, where nothing, not even light, can escape once past a certain point, easily leads to the idea of an unstoppable force drawing in everything nearby.

However, the reality is far less dramatic for distant objects. A black hole's gravitational influence is only truly overwhelming within its event horizon. Outside this boundary, a black hole exerts the same gravitational force as any other object of equal mass. For instance, if our Sun were to suddenly collapse into a black hole (it won't), Earth would continue to orbit it exactly as it does now, maintaining its distance and trajectory. The solar system would not be "sucked in" because the overall gravitational field would be unchanged. It's only if an object ventures too close, crossing the event horizon, that it becomes irrevocably pulled in.

People often believe the myth due to the awe-inspiring and somewhat terrifying nature of black holes, combined with the difficulty of visualizing extreme gravitational physics. The term "black hole" itself conjures images of an empty void that consumes, reinforcing the idea of a cosmic drain. Sensationalized media and a lack of detailed understanding about gravitational fields contribute to this widespread belief, making it easy to imagine these celestial giants as active predators rather than passive, albeit incredibly dense, gravitational wells.