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A Sky of Diamonds

November 19, 2012

Just when you think the world can’t get any more fantastic than it already is, they discover that there is a STAR made of DIAMOND!

Image

10 billion, trillion, trillion carats of sparkling diamond star!

The cosmic diamond is a mass of crystallized carbon, 4,000 km across, around 50 light-years from the Earth in the constellation Centaurus.

It’s the compressed heart of an old star that was once bright like our Sun but has since faded and shrunk.

Astronomers have decided to call the star “Lucy” after the Beatles song, Lucy in the Sky with Diamonds. – Don’t you just love that?! Scientists with a smile…

 

Twinkle twinkle

“You would need a jeweller’s loupe the size of the Sun to grade this diamond,” says astronomer Travis Metcalfe, of the Harvard-Smithsonian Center for Astrophysics, who led the team of researchers that discovered it.

The diamond star completely outclasses the largest diamond on Earth, the 546-carat Golden Jubilee which was cut from a stone brought out of the Premier mine in South Africa.

The huge cosmic diamond – technically known as BPM 37093 – is actually a crystallised white dwarf. A white dwarf is the hot core of a star, left over after the star uses up its nuclear fuel and dies. It is made mostly of carbon.

For more than four decades, astronomers have thought that the interiors of white dwarfs crystallised, but obtaining direct evidence became possible only recently.

The white dwarf is not only radiant but also rings like a gigantic gong, undergoing constant pulsations.

“By measuring those pulsations, we were able to study the hidden interior of the white dwarf, just like seismograph measurements of earthquakes allow geologists to study the interior of the Earth.

“We figured out that the carbon interior of this white dwarf has solidified to form the galaxy’s largest diamond,” says Metcalfe.”

Information gathered from the BBC News Website

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One Comment leave one →
  1. November 19, 2012 2:07 pm

    That is so cool! 🙂

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