Confirming what the Beatles always knew, astronomers have actually
found a diamond in the sky - directly above Australia. It is the
biggest known diamond in the universe, in fact.
According to
American astronomers at the Harvard-Smithsonian Centre for
Astrophysics, a white dwarf star in the constellation of Centaurus,
next to the Southern Cross, has been found to have a
3000-kilometre-wide core of crystallised carbon, or diamond.
It
weighs 2.27 thousand trillion trillion tonnes - that's 10 billion
trillion trillion carats, or a 1 followed by 34 zeroes. The biggest
earthly jewel is one of the British crown jewels, the 530-carat Star of
Africa.
However, this cosmic jewel is hidden beneath a layer of
hydrogen and helium gases, with the diamond core making up between 50
and 90 per cent of its mass. "It's the mother of all diamonds," said
astronomer Travis Metcalfe, who led the team of researchers that
studied the star.
"Some people refer to it as Lucy, in a tribute to the Beatles song Lucy in the Sky with Diamonds."
Known
officially as BPM 37093, the star confirms a theory, first raised in
the early 1960s, that cool white dwarfs should have a diamond core. -- The Age (2004)
In tangentially related news,
Miners in South Africa claim they have unearthed the biggest diamond in the world.
The giant 7,000 carat jewel is said to be the size of a coconut and worth at least £15million, reports the Daily Mirror.