If a black hole loses enough energy, does it become another cosmic object?

 

${10}^{67}$.

That's how long you'll have to wait and find out.

One hundred trillion trillion trillion trillion trillion years. Or,

10,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000.

You see, that's how long it takes for a black hole the size of our sun to evaporate.

Hawking radiation, that's the ticket.

The black hole slowly leaks particles, losing mass, until poof, it's gone.

What happens next?

Does it turn into a star? A nebula? A cosmic quesadilla?"

Well, not exactly.

The thing about black holes is they're not like other cosmic objects. They're not made of stuff, per se.

They're more like...holes in the fabric of spacetime.

But, and this is where it gets interesting, as the black hole evaporates, it might leave something behind.

Not a star or a gas cloud, but a concentrated nugget of pure information. This is a mind-bender, even for physicists.

Some think this information could be the key to understanding the universe's deepest secrets, while others think it might just disappear into the ether.

There's a theory floating around about a black hole remnant. Something left behind when a black hole evaporates.

Not a star, not a cloud, but a nugget of pure information. This nugget, the theory goes, might be the key to unlocking some of the universe's most tightly held secrets.

It's a long shot, a cosmic gamble, but that's the kind of stuff that keeps us stargazers up at night.

It's the mystery, the unknown, the sheer audacity of the universe that keeps us reaching for the stars, even when they're a hundred trillion trillion trillion trillion trillion years away.

Will the Earth ever fall into a black hole? Black holes are said to "swallow" planets, making them dead. Can the Earth ever get into one?

 There is nothing impossible in this universe.

But every event is associated with a probability factor. And the probability of such an event happening (where Earth falls into a blackhole) is close to zero.

Also its misleading to state that Blackholes eat up everything. Because it gives an impression that Blackholes actively chases down every star and every planet to eat them out like a shark in the ocean, but that’s not correct.

It just has an immensly high gravitational pull, which decreases exponentially with distance.

A blackhole can be compared to a hole in an unimaginably vast golf course, where balls (planets or stars) will only fall into the hole if they approach dangerously close to the hole.

And if they do, there is nothing that can stop them from falling. The only catch is, this hole is not stationary (like in actual Golf course) and moves through space & time.

So, yes its not impossible for Earth to fall into a blackhole, but for that to happen, our solar system has to be in direct line of a moving blackhole and space is just toooo big (even for our Solar System) for that to happen.

Hence, not zero but almost zero probability.

What is the effect of a star being pulled into a black hole? Does it change in size?

 A star is not ‘pulled in’ to a black hole - like, ‘swallowing’ something, as is often mentioned. Instead, when a star is close enough to a black hole, the material from the star flows into the black hole. This is called ‘accretion’.

Artwork depicting a black hole drawing matter off a star, which then swirls around the black hole in an accretion disk. Credit: NASA/CXC/M.Weiss

An accretion disk forms whenever the matter being accreted possesses enough rotational momentum that it cannot simply fall inward toward the central singularity of a black hole along a straight line. It begins to orbit the black hole and a ‘disc’ shape is seen.

Therefore, the answer to your question is, when a star falls into a black hole, it is not a star any more; it is all gas.

What if the Great Attractor was a gigantic black hole 100x larger than the TON 618?

 

A cool what-if, but that is not reality.

100x larger than TON 618 is peanuts compared to what's actually tugging on our galaxy.

TON 618 already is considered a monster, at 66 billion solar masses for black holes, yes.

Times that by 100?

You're looking at 6.6 trillion solar masses.

Impressive, but the Great Attractor is dragging on stuff with the equivalent of 100 quadrillion solar masses.

Or about 15,000 times more massive than your hypothetical black hole.

We are also fairly pretty sure that the Great Attractor is not an object.

Probably an enormous super-cluster of galaxies, right in the middle is the Norma Cluster.

We can hardly see it because it lies behind the galactic centre of the Milky Way, but its gravitational effects leave no doubt.

It is huge enough to take part in tens of thousands of galaxies, even whole clusters, in motion.

A black hole-even one 100 times bigger than TON 618-just doesn't have that kind of reach, doesn't have that heft.

The real Great Attractor is that huge knot in the cosmic web where galaxies, dark matter, and everything else flow into.