PSR J1719-1438: The Planet-Sized Diamond in Space

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PSR J1719-1438 is believed to be a planet-sized diamond, likely a remnant core of an ultra-low mass carbon-oxygen white dwarf. The discussion highlights the need for extreme pressure and heat for carbon to crystallize into diamond, raising questions about the evidence supporting this classification. The companion planet's density is noted to be significantly higher than that of pure diamond, suggesting a complex formation process. Comparisons are made to man-made diamonds, which also require specific conditions for creation. The conversation reflects curiosity about the scientific understanding of such celestial bodies and their characteristics.
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https://www.youtube.com/watch?v=ylGwsIIyZf0
Reference:
http://en.wikipedia.org/wiki/PSR_J1719-1438"
 
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What evidence do they have that this is a diamond planet? They mention it is made of carbon but not how they know the configuration the carbon is in.
 
Hrm...I thought highly compressed and heated carbon had a very good chance of configuring itself in Diamond. Now you have me thinking... I'm sure it's more complicated than simply having heat and pressure, so I don't really know.
 
I think that all you really need and the right mixture of elements (unless its pure C)

Thats how they make man made jewelry
 
CosmicEye said:
I think that all you really need and the right mixture of elements (unless its pure C)

Thats how they make man made jewelry

What exactly do you mean? Diamond, in any form, requires extreme pressure combine with lots of heat to make it form into that particular configuration. The impurities of the diamond can give it different colors and such.
 
ryan_m_b said:
What evidence do they have that this is a diamond planet? They mention it is made of carbon but not how they know the configuration the carbon is in.

The companion planet is probably a remnant core of a ultra-low mass carbon-oxygen white dwarf. It has a minimum density of 23 g/cm^3 and a pure diamond has a density of 3.5–3.53 g/cm^3.
Wikipedia said:
Scientific evidence indicates that white dwarf stars have a core of crystallized carbon and oxygen nuclei. The largest of these found in the universe so far, BPM 37093, is located 50 light-years away in the constellation Centaurus. A news release from the Harvard-Smithsonian Center for Astrophysics described the 4,000 km wide stellar core as a diamond.
[/Color]
Reference:
http://en.wikipedia.org/wiki/PSR_J1719-1438"
http://en.wikipedia.org/wiki/Diamond"
http://en.wikipedia.org/wiki/BPM_37093"
 
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Orion1 said:
The companion planet is probably a remnant core of a ultra-low mass carbon-oxygen white dwarf. It has a minimum density of 23 g/cm^3 and a pure diamond has a density of 3.5–3.53 g/cm^3.

[/Color]
Reference:
http://en.wikipedia.org/wiki/PSR_J1719-1438"
http://en.wikipedia.org/wiki/Diamond"
http://en.wikipedia.org/wiki/BPM_37093"

Wow...that is one dense diamond...
 
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I don't really care about the details, but can we call it Lucy.
 
Drakkith said:
What exactly do you mean? Diamond, in any form, requires extreme pressure combine with lots of heat to make it form into that particular configuration. The impurities of the diamond can give it different colors and such.

Right, that's what they do. They put a certain amount of carbon, with the right amount of impurities for color into a little chamber thing. If you can imagine all 4 sides of a pyramid with a small hole carved out at the center closing in on the soon to be made jewel at the center, it closes and compresses it to tons of psi for a few hours until the jewel forms.

I don't remember the exact specs but it was on 'how its made' a while ago. I don't know if they make actual diamonds or if they can only make less dense jewels and birthstones. It was pretty interesting. If you go to a jeweler you can tell the real Earth made ones from the lab made ones. Man made ones are much clearer vs naturally made which are much more opaque.
 
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CosmicEye said:
Right, that's what they do. They put a certain amount of carbon, with the right amount of impurities for color into a little chamber thing. If you can imagine all 4 sides of a pyramid with a small hole carved out at the center closing in on the soon to be made jewel at the center, it closes and compresses it to tons of psi for a few hours until the jewel forms.

I don't remember the exact specs but it was on 'how its made' a while ago. I don't know if they make actual diamonds or if they can only make less dense jewels and birthstones. It was pretty interesting. If you go to a jeweler you can tell the real Earth made ones from the lab made ones. Man made ones are much clearer vs naturally made which are much more opaque.

Oh ok, I see what you were getting at.
 

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