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A diamond bigger than Earth? - Pavel - 10-12-2012
By Chris Wickham
LONDON | Thu Oct 11, 2012 4:45pm EDT
(Reuters) - Forget the diamond as big as the Ritz. This one's bigger than planet Earth.
Orbiting a star that is visible to the naked eye, astronomers have discovered a planet twice the size of our own made largely out of diamond.
The rocky planet, called '55 Cancri e', orbits a sun-like star in the constellation of Cancer and is moving so fast that a year there lasts a mere 18 hours.
Discovered by a U.S.-Franco research team, its radius is twice that of Earth's with a mass eight times greater. That would give it the same density as Earth, although previously observed diamond planets are reckoned to be a lot more dense. It is also incredibly hot, with temperatures on its surface reaching 3,900 degrees Fahrenheit (1,648 Celsius).
"The surface of this planet is likely covered in graphite and diamond rather than water and granite," said Nikku Madhusudhan, the Yale researcher whose findings are due to be published in the journal Astrophysical Journal Letters.
The study - with Olivier Mousis at the Institut de Recherche en Astrophysique et Planetologie in Toulouse, France - estimates that at least a third of the planet's mass, the equivalent of about three Earth masses, could be diamond.
Diamond planets have been spotted before but this is the first time one has been seen orbiting a sun-like star and studied in such detail.
"This is our first glimpse of a rocky world with a fundamentally different chemistry from Earth," Madhusudhan said, adding that the discovery of the carbon-rich planet meant distant rocky planets could no longer be assumed to have chemical constituents, interiors, atmospheres, or biologies similar to Earth.
David Spergel, an astronomer at Princeton University, said it was relatively simple to work out the basic structure and history of a star once you know its mass and age.
"Planets are much more complex. This 'diamond-rich super-Earth' is likely just one example of the rich sets of discoveries that await us as we begin to explore planets around nearby stars."
"Nearby" is a relative concept in astronomy. Any fortune-hunter not dissuaded by "The Diamond as Big as the Ritz", F.Scott Fitzgerald's jazz age morality tale of thwarted greed, will find Cancri e about 40 light years, or 230 trillion miles, from Park Avenue.
(Editing by Andrew Osborn, Alistair Macdonald and Sandra Maler)
copied from:
http://www.reuters.com/article/2012/10/11/us-space-diamond-planet-idUSBRE89A0PU20121011
RE: A diamond bigger than Earth? - Wolfs Ghost - 10-12-2012
io9 Article
Thanks to what someone said in one of my skype chats, I can't think of anything other than Planet Arrakis from the Dune Novels, and Blingworms.
RE: A diamond bigger than Earth? - Xelon - 10-12-2012
I would say if it where possible to get there and take the Diamonds back to earth we would see Diamonds become a regular thing.
But that won't be possible. (nerd)
RE: A diamond bigger than Earth? - jammi - 10-12-2012
(10-12-2012, 03:40 PM)Xelon Wrote: I would say if it where possible to get there and take the Diamonds back to earth we would see Diamonds become a regular thing.Diamonds are already a regular thing. Their value has been hyper-inflated by certain corporations stockpiling decades worth of goods in warehouses in South Africa and trickle-feeding them onto the world market. It's all rather sordid and disgusting, really.
But that won't be possible. (nerd)
RE: A diamond bigger than Earth? - Pavel - 10-12-2012
(10-12-2012, 06:58 PM)jammi Wrote: Diamonds are already a regular thing. Their value has been hyper-inflated by certain corporations stockpiling decades worth of goods in warehouses in South Africa and trickle-feeding them onto the world market. It's all rather sordid and disgusting, really.
Really? That sounds so Daumannish...
RE: A diamond bigger than Earth? - Jihadjoe - 10-13-2012
Maybe this explains the old sigma 13 zergrush of traders.
RE: A diamond bigger than Earth? - Corsair - 10-13-2012
That would smash right through the Earth if it collided with us. We would hardly slow it down. If only the Universe Sandbox had a spawnable Diamond Planet for me to test that.
RE: A diamond bigger than Earth? - fencore - 10-13-2012
(10-13-2012, 07:05 AM)Corsair Wrote: That would smash right through the Earth if it collided with us. We would hardly slow it down. If only the Universe Sandbox had a spawnable Diamond Planet for me to test that.
You could create an object that's eight times as massive with twice the radius as Earth. The issue with US would be accurately representing the collision. The objects would just collide and either bounce of each other or merge into one larger object, depending on how you've got collisions set.
Sandbox is a great motion and gravitation simulator, but misses the mark when it comes to collisions.
RE: A diamond bigger than Earth? - Soul Reaper - 10-13-2012
(10-13-2012, 01:57 AM)Jihadjoe Wrote: Maybe this explains the old sigma 13 zergrush of traders.
Ah..the good ol' days..brings back lulzy memories...devoid of any sanity.
RE: A diamond bigger than Earth? - Thunderer - 10-14-2012
That's a present every woman would want!