|
Posted by BradGuth on June 8, 2008, 1:50 am
Please log in for more thread options
On Jun 7, 6:55 pm, david.willi...@bayman.org (David Williams) wrote:
> -> I'm guessing that Ceres still has its original mixture of minerals and
> -> ices; unlike our moon (which had an unusual origin, less accretion
> -> than conglomeration), or Mars which -- imo -- burned off its great
> -> salt lake in a furious bout of magmaphreatism.
>
> -> So, if Ceres does contain a frozen lake of water ice, some areas
> -> should appear less cratered. Features formed by glacial erosion could
> -> also exist. That big reflective spot might be a snow-capped peak,
> -> unfettered by gravity and carved by ice into a magnificent
> -> Matterhorn.
>
> Why should only the peak be snow-capped? With no atmosphere to impose a
> temperature gradient, ice would be no more or less likely to exist at
> high altitudes than low ones.
>
> But, I suspect, the existence of ice anywhere on or in Ceres is
> unlikely. The temperature is high enough that ice would sublime away
> quite quickly, and there is insufficient gravity to hold the vapour and
> allow it to re-condense.
>
> We'll see, but I'm not at all optimistic.
>
> dow
Ceres is at best almost as bad off as Mars, if not worse.
Does Ceres have thorium?
Does Ceres have salt?
Our moon should have thorium as well as salt, plus any good number of
other usable minerals and raw elements, including 3He.
Brad Guth Brad_Guth Brad.Guth BradGuth
| 
XML Sitemap