Space-Time Loops May Explain Black Holes

SPACE.com ^ | 10 July 2013 Time: 07:00 AM ET | Clara Moskowitz,

[BenLurkin]

A black hole is created when a huge star runs out of fuel for nuclear fusion and collapses under its own gravity. The star's outer layers are expelled, and its core falls in on itself, with the pull of gravity becoming ever stronger, until what's left is the core's mass condensed into an extremely small area. According to general relativity, this area is a single point of space-time, and the density there is infinitely large — a singularity.

But most scientists think singularities don't really exist, that they're just a sign that equations have broken down and fail to adequately describe reality. Loop quantum gravity appears to be an improvement on general relativity in describing black holes because it doesn't produce a singularity.

The idea is based on the notion of "quantization," which breaks an entity up into discrete pieces.Whilequantum mechanics says atoms exist in quantized, discrete states, loop quantum gravity posits that space-time itself is made of quantized, discrete bits, in the form of tiny, one-dimensional loops.

[jeffc]

It’s the question that drives us. What is the question?

[null and void]

If de shoe fit...

[MarineBrat]

[MarineBrat]

42

[Hugin]

“But most scientists think singularities don’t really exist, that they’re just a sign that equations have broken down and fail to adequately describe reality.”

But don’t dare suggest they could be wrong about what the weather will be like 50 years from now.

[BO Stinkss]

Space time you say?

[2 Kool 2 Be 4-Gotten]

But most scientists think singularities don’t really exist, that they’re just a sign that equations have broken down and fail to adequately describe reality.

---

I didn’t actually know that this was the case. I thought black holes were thought to be real physical phenomena. It’s not for me to say that they are or they ain’t but I thought the experts thought they were as real as pulsars, quasars, supernovae, etc.

[circlecity]

"...the density there is infinitely large — a singularity."

There is no such thing as an actual infinity in the material universe. It is an abstract concept.

[OldNavyVet]

singular ... "1. Being the only one of its kind; single, unique 2. exceptional; extraordinary; remarkable

singularity ... 1. the condition of being singular 2. a unique, distinct, or peculiar feature or thing

From that, I'd say that God is a singularity.

[mad_as_he$$]

You aren’t. ;-)

[The Cajun]

loop quantum gravity posits that space-time itself is made of quantized, discrete bits, in the form of tiny, one-dimensional loops.

Think that if something is one dimensional, it's a lot tinier than tiny :)

[dagogo redux]

They should consult Joe Biden for the truth here - I believe he is a singularity.

[TexasCajun]

Let’s just say ULS imports all its basketball players. :)

[DManA]

But He is a bright hole.

Black hole takes everything.
Bright hole gives everything.

[Bratch]

"Time travel. Since my first day on the job as a Starfleet captain I swore
I'd never let myself get caught in one of these godforsaken paradoxes -
the future is the past, the past is the future, it all gives me a headache."

[WildHighlander57]

Bwahahahahaaaa!

Good one!

Now if we could invent a time machine based on the topics’ science, we could go back to Nov 2008 and undo the ballot shenanigans.....

[rdb3]

Theoretically, time travel is possible but in reality, regardless of where you are, it is always now.

Indeed. Just like tomorrow never comes.

But bills do! ;-)

[skinkinthegrass]

thanks, for the post.
far out science ping.

[mad_as_he$$]

Are you sure someone didn’t travel back to make the shenanigans happen?

[HeartlandOfAmerica]

I've always wondered how you can have a supermassive black hole at the heart of the galaxy that is the mass of 4 billion suns and a stellar mass black hole that is the mass of 10 million suns and yet both have the same "infinite gravity."

I tend to agree with the "we just don't know enough" people and/or our technology isn't precise enough to measure such things accurately.

Godspeed

HoA