A planet-like body 4,000 light years away may be the compacted remains of a white dwarf star that is now mostly diamond. John Matson reports
?| August 25, 2011?|
More 60-Second Science
Subscribe via iTunes
Say you need a diamond. You could go down to the jeweler, or you could put some carbon deep underground and let it sit for a couple billion years. Or you could hop in a starship and cruise 4,000 light years over to a dead star called pulsar J1719-1438.
The pulsar is exotic on its own?it's a super-dense remnant of a star spinning at about 10,000 rpm. But far more curious is the world orbiting it, which might be called a planet if it weren't so strange.
It's about as massive as Jupiter, but much more compact. It may be the remains of a carbon-rich white dwarf star. But it's been mostly cannibalized by its pulsar companion, and is now just a shadow of its former self.
The object?s incredible density makes it subject to great internal pressure. And that pressure, acting on the carbon-rich makeup of the white dwarf, may have crystallized much of it to the particular form of carbon we call diamond. That's according to new research in the journal Science. [Citation to come.]
The next step for astronomers is to find out if the diamond planet has rings.
?John Matson
[The above text is a transcript of this podcast]
Source: http://rss.sciam.com/click.phdo?i=d19413d5b73df70f3fb18288626decac
propaganda button blitz blitz alexa chung alexa chung clark gable
কোন মন্তব্য নেই:
একটি মন্তব্য পোস্ট করুন