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Artist's impression of the white dwarf star in orbit with its companion pulsar, PSR J222-0137. B. Saxton (NRAO/AUI/NSF)

Ancient Earth-sized 'diamond' discovered in space

Coldest, dimmest white dwarf ever detected has been located in space about 900 light-years from Earth.

Astronomers in the US have discovered an Earth-sized ‘diamond’ about 900 light-years away in space.

The team of scientists say that the former star – the coldest, faintest white dwarf ever detected - is so cool that its carbon has crystallised to form, essentially, a gigantic diamond in space.

White dwarves are formed at the end of the lifespan of a low- or medium-mass star and are one of the densest forms of matter known to exist. They form when stars, similar in size to our Sun, burn up all of the hydrogen in their cores into helium through nuclear fusion. Gravity then causes the star to collapse inwards, and they slowly cool and fade over time.

The white dwarf was discovered using telescopes from the National Radio Astronomy Observatory and is believed to be about 11 billion years old – about the same age as the Milky Way.

Professor David Kaplan of the University of Wisconsin-Milwaukee described the white dwarf as a “really remarkable object” and said that they are very difficult to detect.

These things should be out there, but because they are so dim they are very hard to find.

Although much cooler than when it was a star, the team calculates that the white dwarf’s temperature is around 2,700 degrees Celsius.

Observations of the dwarf’s companion pulsar (a rapidly-spinning neutron star) led observers to identify its location as being about 900 light-years away from Earth in the direction of the Aquarius constellation (which is comprised of very faint stars and seen in the southern hemisphere from Earth).

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37 Comments
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    Mute Stephen
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    Jun 24th 2014, 11:55 AM

    If I was to somehow get that diamond the size of earth for the other half, she would still find something to moan about.

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    Mute iBob101
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    Jun 24th 2014, 12:01 PM

    You never know, why not give it a try?

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    Mute James St John Smith
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    Jun 24th 2014, 12:08 PM

    Yeah I find your missus moans a lot too

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    Mute Stephen
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    Jun 24th 2014, 12:28 PM

    Can do nothin but laugh at that one :)

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    Mute James St John Smith
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    Jun 24th 2014, 12:53 PM

    You took it well in fairness. Like your missus.

    126
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    Mute Stephen
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    Jun 24th 2014, 12:58 PM

    Unlike your missus, which was a lot of hard work.

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    Mute Stephen Murphy
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    Jun 24th 2014, 1:12 PM

    Lets spend billions and trillions, trying to reach it and leave people here in poverty on earth!

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    Mute John Bawn
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    Jun 24th 2014, 1:37 PM

    No Stephen ,
    Let’s just keep feeding and breeding , more and more billions of people.
    Don’t invest in any new technology, Don’t create jobs for the worlds best scientists don’t send probes and don’t build new telescopes to find new worlds .
    BTW, the money spent on this technology stays on earth, wages and taxes are paid, jobs are created . Only a prototype machine goes up, it’s money well spent .
    If everyone in the past thought like you do, there would be no machines no motors no electricity …….

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    Mute Declan Conway
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    Jun 24th 2014, 2:02 PM

    Stephen – never pass up an easy pink for a hard brown.

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    Mute Dominic Kenneally
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    Jun 25th 2014, 3:42 AM

    Thats the most racist comment ive ever hea….ah its ..Snooker!! I get it now…my bad!!:)

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    Mute Barry Flynn
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    Jun 24th 2014, 11:50 AM

    Science fiction becomes science fact, kinda. In Doctor Who episode “Midnight”, the Doctor goes to a planet called Midnight, which is basically a giant diamond also. Sorry for the nerdgasm.

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    Mute Silent Majority
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    Jun 24th 2014, 11:55 AM

    Not sure which is worse, the doctor who anecdote, or the use of nerdgasm!

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    Mute Gracie
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    Jun 24th 2014, 12:03 PM

    Kayne West has just bought it for Kim Big Arse

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    Mute damien chaney
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    Jun 24th 2014, 12:11 PM

    Watch cosmos on discovery, past the edge of our known universe scientist speculate their is an endless multiverse

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    Mute eye_c_u___
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    Jun 24th 2014, 1:03 PM

    Speculation. Just as god was. Ler them prove what’s beyond the edge of universe first

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    Mute Mike Spillane
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    Jun 24th 2014, 1:35 PM

    Just the right size for her ring…

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    Mute Tricia Golden
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    Jun 24th 2014, 4:25 PM

    First thing I thought about was that episode :)

    I suggest we definitely DON’T try to colonise that planet……….

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    Mute George Grey
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    Jun 24th 2014, 12:51 PM

    11 billion years old…diamonds really are forever!

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    Mute Brian Ó Dálaigh
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    Jun 24th 2014, 11:47 AM

    You’d need a big ring for that diamond!

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    Mute Emily Elephant
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    Jun 24th 2014, 11:59 AM
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    Mute Brian Ó Dálaigh
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    Jun 24th 2014, 12:05 PM

    Ha! I was thinking more along the lines of Uranus, if you get me…

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    Mute Dominic Kenneally
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    Jun 25th 2014, 3:38 AM
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    Mute Joan Murphy
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    Jun 24th 2014, 12:07 PM

    Shine bright like a diamond …..

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    Mute Philip King
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    Jun 24th 2014, 12:10 PM

    Diamonds don’t shine

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    Mute Joan Murphy
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    Jun 24th 2014, 12:37 PM

    Chill out guys it’s just a line from a song …

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    Mute Stephen Byrne
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    Jun 24th 2014, 12:51 PM

    An awful awful song.

    Awful

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    Mute Leopold Dedalus
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    Jun 24th 2014, 12:52 PM

    Oh look an article that mentions diamonds, I’ll just mindlessly post lyrics from a song I know about diamonds that has no relation whatsoever, nor is humorous nor adds anything in general to the discussion. Then I’ll remind everyone that it’s a line from a song as if they don’t know having heard it on repeat on the radio for about a month.

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    Mute Joan Murphy
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    Jun 24th 2014, 1:12 PM

    You glad you go it that rant off your chest Leopold ? Make you feel better ? ?

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    Mute Fognostical
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    Jun 24th 2014, 1:22 PM

    @ Joan , thejournal seems to attract them like moths to a flame :-)

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    Mute Gary
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    Jun 24th 2014, 1:25 PM

    The song lyrics should be “total internal reflection like a diamond”.

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    Mute Leopold Dedalus
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    Jun 24th 2014, 1:30 PM

    Did quoting BS song lyrics make you feel better, Joan?

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    Mute Joan Murphy
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    Jun 24th 2014, 2:30 PM

    Oh stop being so serious !

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    Mute Joan Murphy
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    Jun 24th 2014, 2:34 PM

    Frognostical , you are so right !

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    Mute Jeff Nolan
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    Jun 24th 2014, 1:05 PM

    5.4 quadrillion miles away….mmm…..Will she wait for me ??

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    Mute Fognostical
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    Jun 24th 2014, 12:22 PM

    I blame Lucy .

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    Mute damien kierans
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    Jun 24th 2014, 10:20 PM

    Thrion lanaster is also a white dwarf. Just saying..

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    Mute Dominic Kenneally
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    Jun 25th 2014, 3:48 AM

    If the star is a diamond where does its fusion happen?..surely its core is extremely dense?…now I feel dense.ha

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