Sterling wrote: <A planet of 75% iron with a 25% crust of Tungsten would have a density of 11, and I suppose that if everything less refractory than tungsten had boiled away, you could get such a planet...>
Those densities are for items sitting on your desk. The iron core of earth has a density of almost 13gm/cm^3 out to 1000km. Over the next 2000km the density drops to around 11gm/cm^3. I would imagine if this planet is 1.6 times the diameter of earth the 11+gm/cm^3 would extend even farther from the center. Additionally if most of the lighter elements have boiled away leaving a mostly iron and refractory element sphere, the 11+gm/cm^3 could comprise a significant portion of the sphere with the center being very dense. In other words it probably doesn't need an exotic mix to get to this density. The core of a gas giant boiled away (as Sterling mentioned) to the iron and refractory elements would probably do just fine. -- Eric Olson 610 W. Moore Rd Tucson AZ 85755 http://www.star-bits.com ______________________________________________ Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html Meteorite-list mailing list [email protected] http://six.pairlist.net/mailman/listinfo/meteorite-list
