NASA Scientists Identify Smallest Known Black Hole

[Chipstone306]

WOW!!!!

http://www.nasa.gov/topics/universe/features/smallest_blackhole.html

 

[TSPenguin]

Amazingly, equations from Albert Einstein predict that a black hole with 3.8 times the mass of our Sun would be only 15 miles across -- the size of a city. “This makes the black hole one of the smallest objects ever discovered outside our solar system,” says Shaposhnikov.

cool

 

[MJR]

That is very interesting. There might be even smaller types of black holes out there too. This is just the start.

 

[Urwumpe]

That is very interesting. There might be even smaller types of black holes out there too. This is just the start.

Not really. The smaller a black hole gets, the more energy it emits. While there is theoretically no lower limit for a black hole, practically at one point, the black hole will evaporate with in years.

This black hole, BTW, will evaporate in 4.105462079 * 10 ^ 63 years. It can be considered pretty stable.

 

[MJR]

I am not that smart in math so how would you calculate that?

 

[Urwumpe]

I am not that smart in math so how would you calculate that?

simple Hawking radiation equation.

 

[MJR]

I am definitively not familiar with that.

 

[Urwumpe]

I am definitively not familiar with that.

its not the most complex formula, just look into wikipedia for it.

 

[silent_protagonist]

http://xaonon.dyndns.org/hawking/
A handy online Hawking radiation calculator.