Did you know space is really^really big?

[the-pi-guy]

Except radius is 0 for the singularity.  It never approaches it, it is 0.  Thus infinite mass.  Though, there's more to black holes that we know nothing of.  Which goes back to our understanding of quantum mechanics and the possibility of the equations to fluid mechanics technically being wrong.

At r = 0;
m = m, mass is not infinite. 
F = Gm1m2/r^2;  Force is infinite, because that is what dividing by zero does.
Mass is not infinite, by any means.  Gravity and volume is infinite as r -> 0;   And yes, it goes to zero, because if it doesn't, then that means it already is zero.  Pretty sure we aren't in a black hole. 

[darkknightkryta]

At r = 0;
m = m, mass is not infinite. 
F = Gm1m2/r^2;  Force is infinite, because that is what dividing by zero does.
Mass is not infinite, by any means.  Gravity and volume is infinite as r -> 0;   And yes, it goes to zero, because if it doesn't, then that means it already is zero.  Pretty sure we aren't in a black hole. 

Except, that's not the equation of the singularity.

[the-pi-guy]

Except, that's not the equation of the singularity.

Question:

What exactly is a singularity? What does infinite density mean?
Answer:

We might say that the singularity is where all matter was crushed to infinite density (finite matter in zero volume). A better definition might be a point at which world lines come to an abrupt end, marking the end of time and space as it were.
Finite matter = finite mass

http://www.astro.virginia.edu/~jh8h/Foundations/Foundations_1/quest9.html

[darkknightkryta]

Looks like it was infinite density, but I could have sworn I heard my astro physics teacher say mass.

[the-pi-guy]

Looks like it was infinite density, but I could have sworn I heard my astro physics teacher say mass.

Sometimes the phrase "mass-density" is used. 

[Dr. Pezus]

I think the claim for No Man's Sky is the number of star systems you can visit but even then I'm pretty sure it's not to scale. I mean, clearly the distances and scale of celestial bodies are not even close.

I don't think they have ever claimed that it approaches the size of our universe. They've just said that it's ridiculously big!

[Legend]

I don't think they have ever claimed that it approaches the size of our universe. They've just said that it's ridiculously big!

I don't think they've claimed it, but their fans sure do.

However they have claimed to have tons of planets though. The stupid thing though is the number they gave was just the limit of seeds, not how many planets are actually in it.

[darkknightkryta]

Sometimes the phrase "mass-density" is used. 

Maybe.  The class was 5 years ago.  Plus I lost my text book