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The Size Of A Supermassive Black Hole [Pic]

Supermassive black hole NGC1277 compared to the size of our solar system

submitted by: richanddead
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The Size Of A Supermassive Black Hole [Pic]. Supermassive black hole NGC1277 compared to the size of our solar system
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Hits: 6435 | Favorites: 0 | Emailed: 1 | Rating: 3.3 | Category: Science | Date: 06/05/2015
 
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Mah_Boi
Male, 18-29, Western US
 607 Posts
Friday, June 5, 2015 9:07:38 PM
>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.

7eggert
Male, 30-39, Europe
 232 Posts
Friday, June 6, 2014 3:25:53 AM
@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.

KLouD
Male, 30-39, Midwest US
 238 Posts
Friday, June 6, 2014 12:01:10 AM
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.

Kaagan
Male, 18-29, Eastern US
 1590 Posts
Thursday, June 5, 2014 11:54:57 PM
"Anyone know if those are measurements of diameter or circumference?"

?... its the average radius of the orbit.

Kaagan
Male, 18-29, Eastern US
 1590 Posts
Thursday, June 5, 2014 11:53:20 PM
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.

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