Solar system formation |
Solar system formation |
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![]() Senior Member ![]() ![]() ![]() ![]() Group: Members Posts: 3419 Joined: 9-February 04 From: Minneapolis, MN, USA Member No.: 15 ![]() |
Here is a recent article in space.com (I tried to link to this a few days ago, but it disappeared from the space.com archives...today it's back) about how Jupiter may have a much bigger core (14-16 Earth masses of rock!) than previously proposed. Previous predictions ranged from a core of 7 Earth masses of rock to no core at all. Juno should help nail down the absolute size of the core, and therefore, whether a rock core was required for the initial accretion. Which came first: gas or rock? And if rock is required to initiate accretion of gas giants... what about stars? -the other Doug (This discussion was originally in the Juno thread but was moved to a separate topic - moderator) -------------------- “The trouble ain't that there is too many fools, but that the lightning ain't distributed right.” -Mark Twain
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#2
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![]() Member ![]() ![]() ![]() Group: Members Posts: 593 Joined: 20-April 05 Member No.: 279 ![]() |
Is see from this site that the contents of the sun are (% by mass):
Caveat - the abundances for the sun are from spectroscopic surface observation. While mixing does go on, is the photosphere a good reflection of the deeper solar core? Could the sun contain considerably more than 1000 Earthworths of building material? Andy |
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