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Speaker to Animals

encephalopathetic
May 16, 2021
8,161
7,370
I think this sun would fill up the Solar System out to Neptune's orbit
Correction. Jupiter's orbit. Still an incredible volume.

I'm guessing a star that size would have a "surface" so tenuous, like 1/1000 the density of our air, it could be called a vacuum on Earth.
 

Hauler

Been fallin so long it's like gravitys gone
Feb 3, 2016
47,652
59,538
Correction. Jupiter's orbit. Still an incredible volume.

I'm guessing a star that size would have a "surface" so tenuous, like 1/1000 the density of our air, it could be called a vacuum on Earth.
You know less about astronomy than you do politics.

 

Speaker to Animals

encephalopathetic
May 16, 2021
8,161
7,370
You know less about astronomy than you do politics.

Surface Gravity Comparison:
The Surface Gravity of the Sun is 274 m/s²,while the Surface Gravity of UY Scuti is 0.003162 m/s².

I can't say if that's near vacuum, not a mathematician

Feel free to correct me. I'm happy to be corrected.
My (incorrect) understanding is that the surface gravity of such a star would be limited by its distance from the core mass.
 

Hauler

Been fallin so long it's like gravitys gone
Feb 3, 2016
47,652
59,538
Surface Gravity Comparison:
The Surface Gravity of the Sun is 274 m/s²,while the Surface Gravity of UY Scuti is 0.003162 m/s².

I can't say if that's near vacuum, not a mathematician

Feel free to correct me. I'm happy to be corrected.
My (incorrect) understanding is that the surface gravity of such a star would be limited by its distance from the core mass.
I can't correct you because I'm dumb, but isn't a vacuum just an absence of air - well, absence of anything really?

Not sure what that would have to do with gravity.

Unless you are saying Scuti would have zero gravitational pull. Assuming you had a really, really effective heat shield that would keep you from burning up. And you had 5000 years to get there, assuming you have a ship that travels in excess of 670 million mph.
 

Hauler

Been fallin so long it's like gravitys gone
Feb 3, 2016
47,652
59,538
According to Google, if you were in a Boeing 777 it would take you over 1,200 years to make a single trip around Scuti.

I have not confirmed this math.
 

Speaker to Animals

encephalopathetic
May 16, 2021
8,161
7,370
I can't correct you because I'm dumb, but isn't a vacuum just an absence of air - well, absence of anything really?

Not sure what that would have to do with gravity.

Unless you are saying Scuti would have zero gravitational pull. Assuming you had a really, really effective heat shield that would keep you from burning up. And you had 5000 years to get there, assuming you have a ship that travels in excess of 670 million mph.
More precisely, a vacuum is a lack of any atmospheric gases.

A star's center of mass rules its gravitational sphere of influence. The further you get from it, the weaker its effect becomes.

It masses more in the central region, the atomic density is crushing. As you rise closer to the surface, the matter thins out (relatively).

Earth's atmosphere thins out at high altitude for this reason.

So an incredibly large star's gases will approach what we would call a vacuum if it were to replace ours.
 

Hauler

Been fallin so long it's like gravitys gone
Feb 3, 2016
47,652
59,538
More precisely, a vacuum is a lack of any atmospheric gases.

A star's center of mass rules its gravitational sphere of influence. The further you get from it, the weaker its effect becomes.

It masses more in the central region, the atomic density is crushing. As you rise closer to the surface, the matter thins out (relatively).

Earth's atmosphere thins out at high altitude for this reason.

So an incredibly large star's gases will approach what we would call a vacuum if it were to replace ours.
I guess.
I would assume a big ass star has some big ass gravity.

This things gonna eat itself and implode. Probably become a black hole. I'm totally talking out my ass now.
 

Speaker to Animals

encephalopathetic
May 16, 2021
8,161
7,370
I guess.
I would assume a big ass star has some big ass gravity.

This things gonna eat itself and implode. Probably become a black hole. I'm totally talking out my ass now.
The circumference of a star doesn't necessarily mean it has a lot of mass, which is what counts gravitationally. UY Scuti is definitely scheduled for a type II supernova in some millions of years.
 

Speaker to Animals

encephalopathetic
May 16, 2021
8,161
7,370
I fuckin knew it.
I wish I could live to see a SN here in the Milky Way, but the occurrences are one in three hundred years.

Close enough, you might see it by daylight. It would be amazing. There have only been 4 confirmed observations of supernovae since recorded history, a couple of which were sleuthed out by examining astronomical records from different cultures.