If The Sun Was The Size Of The LARGEST Star

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At the center of our Solar System

lies the Sun. And at nearly 1.

4 million kilometers in diameter,

the Sun is pretty massive. Just

comparing it to everything else

in the Solar System, it is, quite

literally, astronomically gigantic.

But as we all know, this gigantic

star will very, very quickly become

comple...*aggressively clears throat*

Since the Sun is so tiny, it

makes one wonder what would happen

if another star were placed in

the center of our Solar System.

Whether the star be larger or smaller.

For example, Sirius A, the brightest

star in our sky (apart from the

Sun), would be a little less than

2 times larger than the Sun but

mid day on Earth would be about

23 times brighter and the average

temperature would be about 370

degrees Celsius. For comparison,

the average temperature on Earth

with the Sun at the center of

the Solar System is only about

15 degrees Celsius.

What's quite shocking is that,

if the smallest star we know of

(who's name I will not state because...)

Anyway, despite this star being

smaller than our Sun, and literally

smaller than Jupiter and Saturn,

if this star were placed in the

center of our Solar System, noon

on Earth would still be about

3 times brighter than with the

Sun at the center. And the average

temperature on Earth would be

about 110 degrees Celsius.

But not all stars smaller than

our Sun would produce such results.

Our Solar System's closest neighbouring

star, Proxima Centauri, is about

twice the size of EBLM J0555-57Ab

*aggressively clears throat*...

I thought I wasn't going to say that.

If Proxima Centauri were placed

in the center of our Solar System,

the average temperature on Earth

would be around -216 degrees Celsius,

which is about the temperature

on Neptune .

Mid day on Earth would be about

20,000 times dimmer. That's over

20 times dimmer than noon on

Neptune with the Sun at the center

of the Solar System.

Pollux is a very large yet very

small star. It's diameter is about

5 times larger than that of Sirius

A (or about 9 times that of the Sun).

If Pollux were placed in the center

of the Solar System, noon on Earth

would be about 35 times brighter

and the average temperature would

be about 430 degrees Celsius.

That's nearly the temperature

on Venus, the hottest planet in

the Solar System!

Polaris is over 4 times larger

than Pollux placing the surface

of the star about half way to

the orbit of Mercury! At this

incredible size, mid day on Earth

would be over 3000 times brighter

than with the Sun at the center

of the Solar System, and the average

temperature on Earth would be

over 1600 degrees Celsius! That's

hot enough to melt steel!

But, continuing on, Rigel is

over 2 times larger than Polaris

making it nearly 80 times larger

than the Sun and placing its surface

at the orbit of Mercury. At such

a massive size, mid day on Earth

would be nearly 300,000 times

brighter and the average temperature

on Earth would be over 6000 degrees Celsius!

That's hot enough to melt diamond!

But, Betelgeuse is significantly larger.

From the perspective of Earth,

Betelgeuse would... Uhhhhhh.......

Betelgeuse would engulf Mercury,

Venus, Earth, Mars, and the Asteroid

Belt, coming a mere 247 million

kilometers shy of the orbit of Jupiter! ...

"A mere 247 million kilometers"? ...

Despite this star completely engulfing

half the Solar System, its surface

is still nearly 100 million kilometers

farther from Jupiter than the

Sun is from Earth!

Mid day on Jupiter would be

nearly 7000 times brighter than

mid day on Earth with the Sun

at the center of the Solar System.

The average temperature on Jupiter

would be nearly 4000 degrees Celsius,

compared to the typical -108

degrees Celsius when the Sun is

the star in the center of the

Solar System.

VY Canis Majoris is one of the

most commonly known stars because,

until recent years, it was the

largest star known. At about 1.

9 billion kilometers in diameter,

VY Canis Majoris is nearly twice

the size of Betelgeuse . If placed

in the center of the Solar System,

VY Canis Majoris would completely

engulf Jupiter's orbit, but its

surface would still lie nearly

450 million kilometers from Saturn,

a distance far enough to fit

over 300 Suns!

The average temperature on Saturn

would rise to about 3500 degrees

Celsius, compared to the typical

-139 degrees Celsius. However,

as VY Canis Majoris would be

so far from Saturn, noon on Saturn

would only be about 18 times brighter

than a typical noon on Earth.

UY Scuti, the previous record

holder for the largest known star,

would only be about 17% larger

than VY Canis Majoris, but mid

day on Saturn would rise to be

nearly 10,000 times brighter than

a normal noon on Earth. And the

average temperature, would increase

to around 5,000 degrees Celsius!

And now the star we've all been

waiting for. The current record

holder for the largest known star,

Stephenson 2-18, with a diameter

over 2000 times larger than the

diameter of the Sun, would completely

engulf the orbit of Saturn and

its surface would only lie...over

1.3 billion kilometers from Uranus.

A star so gigantic that it completely

engulfs the first 6 planets of

the Solar System...would barely

even make it halfway to the orbit

of Uranus.

But, despite this anticlimactic

star trying to destroy my video,

noon on Uranus would still be

over 3,000 times brighter than

a typical noon on Earth. And the

average temperature on Uranus

would be raised from about -197

degrees Celsius to over 2,000

degrees Celsius.

And just knowing the very unsettling

fact that Earth is sitting at

the center of this star being

completely incinerated at 30,000

degrees Celsius, I think it's

safe to say that our Solar System

was much better designed with

the Sun at the center, than with

the atrociously monstrous Stephenson 2-18.