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View Full Version : Carbon “Super Earths” – Diamond Planets



Fraser
2011-Dec-06, 07:40 PM
During a laboratory experiment at Ohio State University, researchers were simulating the pressures and conditions necessary to form diamonds in the Earth’s mantle when they came across a surprise… A carbon “Super Earth” could exist. While endeavoring to understand how carbon might behave in other solar systems, they wondered if planets high in this element [...]

More... (http://www.universetoday.com/91596/carbon-super-earths-diamond-planets/)

IsaacKuo
2011-Dec-06, 08:28 PM
Surely such a super earth could have an atmosphere. So what if it lacks a magnetic core? Venus lacks a magnetic core, and it has plenty of atmosphere. It's not even a "super" Earth, it's just an Earth.

But what would the atmosphere of a diamond planet be? It sounds like all of the oxygen is supposed to be bound up in iron oxide, so that rules out carbon dioxide. Nitrogen? Methane?

SamCashion
2011-Dec-07, 09:53 AM
I don't understand why this is even questionable now that they've found a diamond planet. Remember the one someone from Melbourne found? http://www.space.com/12731-diamond-alien-planet-discovered-neutron-star.html

PetTastic
2011-Dec-07, 04:47 PM
A diamond crust or mantel could potentially support some very extreme geology.

Diamond is strong enough to support massive cave systems that might be formed as the planet cools.

Furthermore, the decay of carbon 14 to nitrogen on a planetary scale getting trapped inside massive chunks of diamond could produce spectacular explosions.