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[Lagslayer]

Conceivably, but it would probably be more efficient to just use that mass to build a Dyson Sphere around a star that already exists.

I was assuming those two would go hand in hand. No sense making a new star if you aren't gonna harness the energy. Though, if we are just gonna be star hopping anyways, it probably would be more efficient to go from star to star, even with this technology, and only if we had to choose between the two. Doing them both together could theoretically replace stars that go out, reducing the need for immediate outward expansion. It could also be used to refuel old stars and keep them going longer. Imagine if we dumped all the other matter in this solar system into the sun (excluding earth and it's moon, of course). How much longer would that keep it going?

Stop me if I'm rambling.

[MetalSlimeHunt]

Regardless, Stellar Husbandry is going to be one of those "man this intergalactic utopia is boring, we should mess with physics" projects.

[10ebbor10]

Especially when we can probably fuse the stuff ourselves more efficiently. After all, herding so much gas kinda requires some degree of gravity manipulation.

[Another]

You can only ever add a few solar masses to a star without collapsing it into a black hole. It would still be possible to extract energy out of matter you throw into a black hole* but no shiny object any more.

*Same way as you can extract energy from water moving from high place to low.

[Descan]

I'm pretty sure Betelgeuse is a feeeeew solar masses larger than the sun. You know, just a tad. >_> So it'd be more than a "adding a few solar masses" to the sun to make it a black hole.

[MonkeyHead]

Imagine if we dumped all the other matter in this solar system into the sun (excluding earth and it's moon, of course). How much longer would that keep it going?

Stop me if I'm rambling.

Not much difference. The Sun is 99% of the Solar System by mass anyway.

I'm pretty sure Betelgeuse is a feeeeew solar masses larger than the sun. You know, just a tad. >_> So it'd be more than a "adding a few solar masses" to the sun to make it a black hole.

[/quote]

Smallest possible stellar mass for black hole formation is 3 to 4 x M_Sun. Most are around 10 solar masses. In theory you could have one of any size, but for one to form from star death, we are talking large mass stars only.

[kaijyuu]

Black holes form in our atmosphere all the time. It's just that they evaporate almost instantly afterward.

Only really big ones are stable, and all eventually will evaporate.

[Bauglir]

Imagine if we dumped all the other matter in this solar system into the sun (excluding earth and it's moon, of course). How much longer would that keep it going?

Stop me if I'm rambling.

Not much difference. The Sun is 99% of the Solar System by mass anyway.

I'm pretty sure Betelgeuse is a feeeeew solar masses larger than the sun. You know, just a tad. >_> So it'd be more than a "adding a few solar masses" to the sun to make it a black hole.

Smallest possible stellar mass for black hole formation is 3 to 4 x M_Sun. Most are around 10 solar masses. In theory you could have one of any size, but for one to form from star death, we are talking large mass stars only.

Fixed your quote tags

Anyway, if we're already assuming starforging and harvesting, we can probably assume that we'll be somehow sucking off heavy elements as they're fused and using them as raw materials to repair damage to the Sphere, allowing us to continue to add hydrogen.

[Il Palazzo]

Imagine if we dumped all the other matter in this solar system into the sun (excluding earth and it's moon, of course). How much longer would that keep it going?

Stop me if I'm rambling.

Not much difference. The Sun is 99% of the Solar System by mass anyway.

Dumping mass onto a star shortens its life span. Refuelling the Sun without also removing the spent material from the core is not going to work.

Black holes form in our atmosphere all the time. It's just that they evaporate almost instantly afterward.

Only really big ones are stable, and all eventually will evaporate.

Has there been any recently found evidence of micro black hole creation/evaporation?
Dissapearing micro black holes should produce a distinct signature flashes that to my knowledge have never been observed as of yet. They certainly haven't found any at CERN.
From what I understand, Hawking radiation is a semi-classical argument, so on the micro scale it might very well not work, and the micro-holes might no longer evaporate.
The point being stating it as fact without conclusive evidence might be a bit of a stretch.

[MetalSlimeHunt]

Regardless, all matter in the universe has not been consumed by black holes, so we can assume there is some element preventing rampant stable singularity formation.

[Lagslayer]

Regardless, all matter in the universe has not been consumed by black holes, so we can assume there is some element preventing rampant stable singularity formation.

Maybe the black holes themselves reach critical mass and explode.

[MetalSlimeHunt]

Doubt it. From what we know, galaxies maintain their gravitational stability through having supermassive black holes at the center. I do not know of us having found any exploded/exploding galaxies.

[Lagslayer]

Well, if it would take big bang proportions of matter to reach that critical mass, we would have to wait for all this stuff to collapse back together. So I'm not sure how well we could test this theory right now. Maybe with a greater understanding of sub-atomic particle physics, it could be mathematically simulated. As much as the matter gets squeezed together under so much gravity, we'd probably have to go more than a few layers down farther than we are now.

Basically, we would have to look for the point where the forces of repulsion between particles start to overcome the forces of gravity shoving them together.

[MetalSlimeHunt]

But gravity never overcomes the nuclear forces, and the nuclear forces never posses range.

[Gentlefish]

You know how black holes suck in matter? You know how matter is super-condensed energy?

Black holes only release x-rays. The rest of the energy is effectively gone from the system.