Current Events > Have you heard of Black Dwarf Stars?

(+) Yeah! (+)

https://en.wikipedia.org/wiki/Black_dwarf?wprov=sfla1

https://youtu.be/1mXueDqxvFs

Basically the most eldest form of a star if it manages to not turn into a black hole. Its only theoretical because the time it takes for a black dwarf to be created is more time than the total age of the universe. it expends all of its energy and no longer gives off any light or heat. And what I wonder is..... what would happen if you got close to one. Would it be safe to touch? Could you stand on it?

We will never know. Humans may not even exist when the first black dwarf finally comes into form

So much of space stuff sounds ridiculous. I still have trouble believing that we somehow have been able to take pictures of galaxies that are a billion miles away and we could only reach if we traveled at lightspeed for a thousand years.

Noumas posted...

So much of space stuff sounds ridiculous. I still have trouble believing that we somehow have been able to take pictures of galaxies that are a billion miles away and we could only reach if we traveled at lightspeed for a thousand years.

We have taken pictures of what they looked like thousands and millions years ago.

Vertically Challenged Star of Color*

No, just the white ones.

Zikten posted...

https://en.wikipedia.org/wiki/Black_dwarf?wprov=sfla1

https://youtu.be/1mXueDqxvFs

Basically the most eldest form of a star if it manages to not turn into a black hole. Its only theoretical because the time it takes for a black dwarf to be created is more time than the total age of the universe. it expends all of its energy and no longer gives off any light or heat. And what I wonder is..... what would happen if you got close to one. Would it be safe to touch? Could you stand on it?

We will never know. Humans may not even exist when the first black dwarf finally comes into form

Sounds like it's just reverted back into a nebula at that point.

The time scales for when these things appear is mind-blowing. Will life even exist at that pount?

Noumas posted...

So much of space stuff sounds ridiculous. I still have trouble believing that we somehow have been able to take pictures of galaxies that are a billion miles away and we could only reach if we traveled at lightspeed for a thousand years.

There are no galaxies billions of miles away. The closest galaxy is 25k light years.

Pikachuchupika posted...

The time scales for when these things appear is mind-blowing. Will life even exist at that pount?

A quadrillion years is really nothing in the grand scheme of things. The universe will last that amount 10^85 over.

[LFAQs-redacted-quote]

Miles. That's 32 billion light years. Which is actually because of inflation because when you see it, it's an image from 14 billion years ago, and the universe is 14 billion years old, but inflation has expanded it to 32 billion light years away.

[LFAQs-redacted-quote]


The estimated radius of the observable universe is 46 billion light years and on that scale is fucking packed full of galaxies. So many fucking galaxies it's not possible to make a loop with your finger and thumb, point it at the sky, and not encircle like a million galaxies.

For those who don't know, one light year is circa 6 trillion miles.

archedsoul posted...

A quadrillion years is really nothing in the grand scheme of things. The universe will last that amount 10^85 over.

Which makes it rather humbling that star formation and galaxies as we know them will only exist for a small fraction of that.

how would it be different from a black hole? i thought a black hole is just some object that has so much mass that light cannot escape its gravitational pull. im no science guy but if it used up all its energy where did the mass go?

if its just a ball of mass with no energy, wouldnt it be basically just a ball of ice that is 0 kelvin? why would that be dangerous beyond why 0 kelvin is already dangerous?

Kloe_Rinz posted...

how would it be different from a black hole? i thought a black hole is just some object that has so much mass that light cannot escape its gravitational pull. im no science guy but if it used up all its energy where did the mass go?

if its just a ball of mass with no energy, wouldnt it be basically just a ball of ice that is 0 kelvin? why would that be dangerous beyond why 0 kelvin is already dangerous?

Much of the mass of a black dwarf was shed during the final stages of it's stars red giant phase. Much of that mass was released as gas that becomes a nebula that births new stars. From there, it becomes a much-cooler white dwarf which burns for trillions of years, before eventually cooling down and becoming a black dwarf once it's exhausted all it's energy.

Yes, I know Kevin Hart.