Naked Universe of Ana

A black hole is not a cosmic vacuum cleaner.

Added 2025-06-20 15:00:39 +0000 UTC

When you hear “black hole,” your brain probably draws something like a bathtub vortex sucking everything in. Spoiler: that’s a myth. No, it’s not going to “suck in” you, Earth, or Saturn. Relax your balls😏

A black hole is a region of space where gravity is so strong, not even light can escape, yeah yeah, you've heard that one before. Sounds all mysterious and dramatic. But hold up: gravity depends on an object’s mass and your distance from it (hi Uncle Einstein, not just him, obviously, but whatever).
Not on how big or small the object is in size.

Right now, the Sun is this massive fireball with a radius of about 700,000 km.
Its mass is about 2 × 10³⁰ kg.
That mass is what keeps Earth in orbit.

Now, imagine:
hypothetically, that the Sun somehow shrinks into a black hole, but keeps the same mass. It just becomes ridiculously compact: the radius of this black hole would be about 3 kilometers. (That’s called the Schwarzschild radius. I once had to write that name on a whiteboard in English, fuck me, what a pain.)

So yeah, same amount of stuff packed into a tiny point.
But the mass stays the same, and gravity at Earth's orbit doesn’t change.

Earth would be totally fine.
It would keep orbiting like nothing happened.
It’d just be dark. Because a black hole doesn’t emit light.

A black hole isn’t a “hole”- it’s a severely depressed star that had the worst day ever. Clinically depressed. Just done with this universe.

Why doesn’t it suck everything in?
Because it’s not a damn magnet.
To fall into a black hole, you’ve gotta get really close. Like, dangerously close.