This is what the sky from Earth might look like if TON 618, the second largest known black hole in the universe, were as close as Alpha Centauri, the closest stellar system to our Solar System. That's 25 trillion miles away from us.

🌌 TON 618 contains 66 billion solar masses. Our entire solar system from the Sun to the edge of the Oort Cloud would fit inside its event horizon with room to spare. The point of no return where even light cannot escape is larger than the distance between our Sun and its nearest neighboring star. If you were falling toward it you would feel nothing unusual crossing the event horizon. No dramatic moment. No sensation. The gravity gradient across a human body at that scale is too gentle to feel. You would cross the boundary between the universe and whatever lies beyond it without knowing it had happened. Everything that makes TON 618 one of the most violent and extreme objects in the known universe would be completely invisible to you at the moment it became irreversible. The most catastrophic threshold in physics would feel like an ordinary Tuesday. I find this one of the strangest facts in all of cosmology. 📌 Source: TON 618 quasar mass measurements, event horizon physics research

If it were that close, we wouldn't be admiring the view. 🚫 The accretion disk is 140 trillion times brighter than the Sun - it would actually cook the Earth's atmosphere instantly. 💀 And If we somehow survived the heat and radiation, the gravity of the black hole would be the next 'Game Over' phase. ☠️

@CuriosityonX TON 618 is trillions of times brighter than the Sun. Even at a distance of 4.37 light years, TON 618 would appear about two thousand times brighter than the Sun and would burn everything on the Earth's surface.

@CuriosityonX This is false. If it were as close as Alpha Centauri, it would be much brighter than the sun and we’d all fry in its radiation.

@CuriosityonX I am sure it would look really pretty, as we all get annihilated due to the intense radiation. Sure would be a fun 4 years before the end of the world.

@CuriosityonX I don't think that's accurate, one does not simply gaze at TON 618 from 4 light years away. You'd be inside the event horizon, falling towards it fast, and fried from the brightness already

@CuriosityonX What if... flying elephants flew out of your butt, what would that look like? What if... we all of a sudden turned into mashed potatoes.... what if....

@CuriosityonX This is what the sun in the sky would look like if the sun was as far from the earth as Pluto.

@CuriosityonX At that distance our solar system would be orbiting TON 618 at near relativistic speeds...

@CuriosityonX I would become extremely religious for at least ten minutes..

@CuriosityonX Correct me if I'm wrong but at that distance, our solar system would start drifting towards it, and we'd have MASSIVE waves, or everything would be frozen depending on how far we're from our sun.

@CuriosityonX @grok what would conditions on Earth actually be like if TON 618 were as close as Alpha Centauri? Paint a picture of what would happen if Earth received the equivalent of ≈ 2.5 million watts of radiation energy per square metre?

@CuriosityonX

@CuriosityonX Safe distance from #ton618 would be around 700 light years, not 4 light years

@CuriosityonX It would also be appearing bigger as we all perish

@CuriosityonX That black hole is pretty bright. I thought they would be... darker.

@CuriosityonX Yet we still spend our days fighting over things that won’t matter in a hundred years.

@CuriosityonX For comparison

@CuriosityonX I like this post even though you're gonna get a ton of actuallies

@CuriosityonX the visualization is doing the thing astronomy almost never does well, which is collapse the cognitive distance between a number on a page and the visceral fact of scale. 25 trillion miles is meaningless. that orb hanging over the horizon is not

@CuriosityonX Could it put off the appropriate amount of light and heat at that distance to keep us in the Goldilocks zone? What if an entire civilization had a black hole for a sun??

@CuriosityonX In reality, TOM 618 extreme luminosity and radiation would fry Earth's atmosphere and life, and its gravity would destabilize the solar system's orbits.

@CuriosityonX Bro that would remind us of the impending inevitable doom that we are getting closer to it and brighter every year…thats scary tbh

@CuriosityonX That would be terrifying and incredible at the same time .. the sky would look like something out of sci-fi.

@CuriosityonX That'd be pretty awesome for a while. Then it would suck. Black hole joke...

@CuriosityonX Thing is: how would nighttime be if it happened?

@CuriosityonX It would be nearly a half degree - about the same as the full moon. That'd be cool to see. Distance: 4.37 ly ≈ 276,000 AU Diameter: 2606 AU 2606 / 276,000 = 0.00944 (radians) = 0.541 degrees

@CuriosityonX @grok how far would earth have to be from TON 618’s accretion disk for the disk to act in the same way the sun does and provide the same amount of power to the Earth’s surface?

@CuriosityonX

@CuriosityonX This is a slightly more accurate image of what it would look like from earth at that distance right before it pulled the planet apart. Lol.

@CuriosityonX Actually it would be much brighter at this distance, so much that earth would be cooked. ( something like 10 to 100 times brighter than the sun)

@CuriosityonX We would literally not survive this situation. The amount of energy being thrown our way would kill everything. We would be blind from the light, there would be no day or night and the energy coming would not just be visible light but lethal radiation that strips our planet bare

@CuriosityonX "The quasar's accretion disk would appear 35,000 times brighter than the Sun, flooding the solar system with extreme radiation, boiling Earth's oceans, and stripping away the atmosphere." A more realistic depiction.

🚀 Alpha Centauri is the closest star system to Earth at 4.37 light years away. Even traveling at the speed of our fastest spacecraft it would take over 70,000 years to get there. Our nearest neighbor is basically unreachable with current technology! Follow @FactsUnhinged for daily mind blowing facts 🤯