VY Canis Majoris - A Red hypergiant compared to our solar system.

[Providence]

@Hamartia Antidote @James Jaevid @Vergennes @Slav Defence

VY Canis Majoris is a red hypergiant (star) and one of the largest stars in the Milky way. Some measurements have touted it's radius to be 1500 times the size of our Sun. To put into perspective, let me throw some images here.

Earth w.r.t. the sun

Below is the size of the largest blackhole ever discovered w.r.t our solar system.

Our universe is so so big ...

 

[Nilgiri]

@Hamartia Antidote @James Jaevid @Vergennes @Slav Defence

VY Canis Majoris is a red hypergiant (star) and one of the largest stars in the Milky way. Some measurements have touted it's radius to be 1500 times the size of our Sun. To put into perspective, let me throw some images here.

Earth w.r.t. the sun

Below is the size of the largest blackhole ever discovered w.r.t our solar system.

Our universe is so so big ...

The blackhole itself isnt that big (being a singularity). That would be the event horizon that is illustrated.

One day I hope my soul gets to experience such a thing:

 

[Providence]

The blackhole itself isnt that big (being a singularity). That would be the event horizon that is illustrated.

One day I hope my soul gets to experience such a thing:

What do you mean black hole itself is not big ? Events inside the horizon cannot be placed ever on your timeline. You will never know what happened to them. It's same as your cash being inside a locker.

 

[SMC]

These giant stars tend to have very short lifespans. This one likely won't last beyond a million years. In fact given it's 4,000 light years away it might already have gone supernova but we just don't see it yet..

 

[Nilgiri]

What do you mean black hole itself is not big ? Events inside the horizon cannot be placed ever on your timeline. You will never know what happened to them. It's same as your cash being inside a locker.

I am saying the physical matter that has become a blackhole is incredibly small (the singularity itself).

You can calculate the schwartschild radius for say multiple-solar mass stars to get an idea yourself.

If you include the relativistic influence of the blackhole (i.e the event horizon), then yes the blackhole can be considered to be massive in size.

But it basically depends on what you define to be the blackhole (singularity or event horizon.....physical object or its relativistic influence etc)

These giant stars tend to have very short lifespans. This one likely won't last beyond a million years. In fact given it's 4,000 light years away it might already have gone supernova but we just don't see it yet..

The greatest time machine is the night sky

 

[Slav Defence]

@Hamartia Antidote @James Jaevid @Vergennes @Slav Defence

VY Canis Majoris is a red hypergiant (star) and one of the largest stars in the Milky way. Some measurements have touted it's radius to be 1500 times the size of our Sun. To put into perspective, let me throw some images here.

Earth w.r.t. the sun

Below is the size of the largest blackhole ever discovered w.r.t our solar system.

Our universe is so so big ...

Providence,
I really missed your post.Yes, Canis Majoris is 1500 times larger than sun.However, our sun is really small as compare to other blue giants, magnetars, pulsars and other neutron stars and quasars in the universe.
The most fascinating part is that our baby sun is literally important and most suitable for us to support life in our earth at our solar system as other gas giants such as magnetars would have scattered our planet's mass from several million miles away , lol.

If we are placing black holes in the centre of our solar system than of course nothing will get sucked into it (everything gets sucked by black hole is a misconception meaning black holes act like vacuum cleaners) but for life on earth may not be possible.
Still not happy?
Well, our sun is also growing up to become a gas giant. Take a look that what happens after 7 billion A.D and how last day on earth will look like, especially the sunrise:

Regards

 

[Nilgiri]

The most fascinating part is that our baby sun is literally important and most suitable for us to support life in our earth at our solar system as other gas giants such as magnetars would have scattered our planet's mass from several million miles away , lol.

Life.....as we know it

If we are placing black holes in the centre of our solar system than of course nothing will get sucked into it (everything gets sucked by black hole is a misconception meaning black holes act like vacuum cleaners) but for life on earth may not be possible.

Well, the exact nature would depend on the accretion disk composition and the macro-friction coefficient.

If a blackhole were cleanly inserted into the solar system where the sun is (with no accretion disk).... hypothetically speaking with say solar mass to a few solar masses in size, everything would just continue to orbit (the orbits would have a transition phase to the new stable distance determined by the black hole's exact mass). The really bad thing would of course there being no solar radiation and life (as we know it) would end on Earth quite quickly.

 

[Slav Defence]

Life.....as we know it



Well, the exact nature would depend on the accretion disk composition and the macro-friction coefficient.

If a blackhole were cleanly inserted into the solar system where the sun is (with no accretion disk).... hypothetically speaking with say solar mass to a few solar masses in size, everything would just continue to orbit (the orbits would have a transition phase to the new stable distance determined by the black hole's exact mass). The really bad thing would of course there being no solar radiation and life (as we know it) would end on Earth quite quickly.

Nilgiri,
When star dies, it has two possible fates depending upon it's mass: (a) Becoming a neutron star or a white dwarf when it has less mass(b) becoming a black hole when having heavy mass.
Our sun has less mass that's why it becomes a white dwarf upon destruction.So, technically on basis of current natural settings, we cannot afford a black hole.
However, if our entire solar system collapse then we may get a massive black hole.(Even though if sun has become a white dwarf and has engulfed Mercury, Venus and Earth during the process of self destruction as our mass of 3 planets has gone nowhere.

Regards

 

[Nilgiri]

Nilgiri,
When star dies, it has two possible fates depending upon it's mass: (a) Becoming a neutron star or a white dwarf when it has less mass(b) becoming a black hole when having heavy mass.
Our sun has less mass that's why it becomes a white dwarf upon destruction.So, technically on basis of current natural settings, we cannot afford a black hole.
However, if our entire solar system collapse then we may get a massive black hole.(Even though if sun has become a white dwarf and has engulfed Mercury, Venus and Earth during the process of self destruction as our mass of 3 planet has gone nowhere.

Regards

I am talking pure hypothetical situation here of magically inserting a blackhole where the sun currently is.

Not saying the sun is going to turn into one, the sun is well within chandrasekhar limit of being a stable white dwarf at the end of its life.

The sun wont even achieve carbon burning (fusion) after its done with its helium burning red giant stage, its not massive enough for that.

Blackholes literally only happen for super massive stars that reach the limit of fusion viability (i.e iron core) and above TOV limit for neutron stars.

I don't think there's enough mass in the solar system for a blackhole creation naturally (stellar collapse) at any point as far as we understand it. Certainly it wont become one by "absorbing" more mass around it given the nature of ejections (nova) that white dwarfs are known to do periodically when they have absorbed unsustainable mass in the vicinity.

There are a few other ways the sun could become a blackhole (high energy collisions or other such methods we currently don't know of) but the chances of these happening are infinitesmal, smaller than millions of comets hitting the earth simultaneously, given the vast expanse of the universe and what would be required in such a collision.