[SunkenCiv]

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[SunkenCiv]

U of M researcher simulate characteristics of planetary cores
EurekAlert!

The researchers calculated what would happen at temperatures and pressures likely near the cores of the two exoplanets, Jupiter and Saturn, where temperatures run close to 18,000 F and pressures 10 million bars (a bar is essentially atmospheric pressure at sea level). They found that even post-perovskite could not withstand such conditions, and its crystals would dissociate into two new forms. Focusing on one of those crystals, the researchers discovered that they would behave almost like metals. That is, electrons in the crystals would be very mobile and carry electric current. This would have the effect of supporting the planet's magnetic field (if it has one) and inhibiting reversals of the field. The increased electrical activity would also help transport energy out of the core and toward the planet surface. This could result in more severe activities such as quakes and volcanoes on the surface. The effect would be much stronger in Dense-Saturn than in Super-Earth.

[SunkenCiv]

update to message 12:

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[SunkenCiv]

The King Of The Planets And An Emperor Star Plus The Farthest Full Moon Of The Year
by Jack Horkheimer: Star Gazer
Episode # 07-13 / 1529th Show
Monday 3/26/2007 through Sunday 4/01/2007

Question. If our Earth is 8,000 miles wide how many Earths could we line up side by side across Jupiter's middle? Simple math, answer: we could line up 11 Earths side by side across Jupiter's middle. But if I asked you how many Earths could we fit inside Jupiter well that might take a little bit longer to figure out because most people forget how to do volumes after they've been out of school a few years. The simple answer is: we could fit 1331 Earths inside Jupiter! So it is indeed huge.

[I think Jupiter is only 318 times more massive though]