What would happen if the sun suddenly became a black hole without changing its mass?

What would happen if the sun suddenly became a black hole without changing its mass? This has been the most often requested question we’ve received this Autumn.

And you are not alone if you are already seeing the Earth spiraling into the black-hole-Sun, becoming spaghettified, and other such horrors!

what would happen if the sun suddenly became a black hole without changing its mass?
what would happen if the sun suddenly became a black hole without changing its mass?

What would happen if the sun suddenly became a black hole without changing its mass?

  • Yes, the earth (together with all other celestial bodies in the solar system) would continue to circle the black hole in the same way.

Of fact, owing to a lack of solar energy, planet Earth would become utterly devoid of life in a short period of time (photosynthesis would halt, and the earth would essentially become a snowball).

  • Let us pretend for a moment that the Sun has turned into a black hole. What would it be like if we were in that situation? As the black-hole-Sun will not emit any light or heat, prepare for a wretched life in the extreme cold and pitch darkness.

On the perpetually black sky, you will no longer be able to see the Moon or our neighboring planets, just stars. But there’s good news: our black-hole-Sun will be so little that we won’t sense any change in terms of gravity. Even if the Sun were to change into a black hole without the usual expansion, explosion, and mass loss, a solar mass black hole would still be small!

Singularity is a point of infinite density when mass is compressed into a black hole. The wider the event horizon (the point of no return) of a huge object, the farther away a stable orbit of a planet would be from a black hole. The size of the event horizon is dictated by the Schwarzschild radius in the simplest case of a non-rotating black hole.

The Schwarzschild radius of a tiny solar mass black hole is around 3 kilometers. As a result, any planet circling more than 3 kilometers from the Solar System’s center would be secure! Of course, you might argue that the Sun spins, and therefore the black hole will as well. And you’ll be completely correct! However, the event horizon will be significantly narrower in such situation.

  • It’s a fascinating question. Yes, the mass hasn’t changed. Of fact, without the sun’s light energy, the planet would be black. However, when it comes to mass, I’ve come across an intriguing thought.

The blackhole may not be able to absorb mercury. But! It doesn’t give out any stardust. Furthermore, the blackhole may begin to absorb cosmic dust, gradually expanding its mass. It may not account for much, but given enough time, it might very well be the end of the solar system.

In this case, the Sun is replaced by a Blackhole of equal mass. Blackhole, on the other hand, is a vacuum cleaner, and the more it sucks in, the farther it can reach.

  • Several variables influence the Earth’s orbit around the Sun (such as the masses of the two objects, distance between them etc.) A star also does not behave as a vacuum cleaner when it falls into a black hole.

Among other things, it has an impact on the escape velocity. As a result, if the Sun collapses into a black hole, the Earth’s orbit will remain unchanged. The Sun, on the other hand, will not provide us with any light or heat since nothing can escape a black hole.

  • You are correct! For the Earth, nothing would change: gravity… the bike… everything would remain the same. However, without the sun’s warmth, all living things would perish from the cold.
  • The sun does not have enough mass to convert into a black hole, hence it will not happen. If it did, though, we’d all continue circling once a year until we froze to death, which wouldn’t take long since the black hole would have the same mass as the sun.

F.A.Q: what would happen if the sun suddenly became a black hole without changing its mass?

What if the Sun was abruptly replaced by a black hole of equal mass?

The Earth’s orbit around the Sun would remain unaltered if our Sun was abruptly replaced by a black hole of the same mass. Of course, the Earth’s temperature would fluctuate, and we wouldn’t be affected by solar wind or solar magnetic storms. Crossing within the Schwarzschild radius is required to get “sucked” into a black hole.

Is it possible that our Sun may wind up as a black hole at the conclusion of its life cycle? Why do you think that is?

When our sun dies, it isn’t big enough to cause a stellar explosion known as a supernova, and it will never become a black hole.

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