# The Size Of A Supermassive Black Hole [Pic]

Submitted by: richanddead 2 years ago in
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Supermassive black hole NGC1277 compared to the size of our solar system
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Male 606
>The super massive black hole in the center of our galaxy, is smaller than our sun.

Singularities themselves don`t have a "size", because that doesn`t mean anything to a singularity. It doesn`t take up space. It`s infinitely dense. It`s literally smaller than the smallest possible thing can exist, because it`s a point, not a volume.

The only meaningful spatial boundary you can give to a black hole is its event horizon; the edge at which its gravitational pull is so great, light can`t escape it.

Technically, yes, the singularity is smaller than the sun. The black hole it resides in is very much a supermassive object.
Male 387
@Kaagan: The sun has a diameter of 1 392 684 km.
If the sun was a black hole, it would be about 3 km, and Saggitarius A* has 4 000 000 times the mass of the sun, therefore it would have a diameter of 12 000 000 km.

Still less than earth`s orbit, d = 2 r = 150 000 000 km.
Male 253
Our solar system does not end at Neptune in fact Neptune may only be roughly half way between the Sun and the edge of our solar system.
Male 1,627
"Anyone know if those are measurements of diameter or circumference?"

?... its the average radius of the orbit.
Male 1,627
idk about this. black holes are incredibly dense(a singularity or the maximum denseness something can be). The super massive black hole in the center of our galaxy, is smaller than our sun.
Male 153
Anyone know if those are measurements of diameter or circumference?
Male 15,832
I heard it sucks.
Male 569
drawman61: 17 light minutes of what?

The diameter of the Earth`s orbit.
Male 2,675
Damn, a massive black hole thread and I totally missed the "your mom" opportunity. d`oh!
Male 2,675
a light minute it like a regular minute but with less calories.
Male 759
Drawman61...17 light minutes of what?
The Speed of Light. Look it up.
Male 258
You can see the Planck Star in the middle.
Male 7,774
17 light minutes of what?
Male 13,630
Wow, thats big and fecking scary
Male 2,670
It`s a rental property, too.

To get seriously large black holes, you need to head for the Magellanic Clouds. That`s where the pricey real state is.
Male 403
what kinda hoes you banging incubus inc? plz dont say my mom.
Male 977
I`ve seen bigger.
Male 4,099
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