Quote:
As for the uneven surface features how does plasma physics explain these features? (1)
The surface could be just erosion of soft material from harder packed material due to sublimation processes. (2)
What large spikes are you referring to? (3)
|
Cool i like it... now we are discussing things... heres the fun bit.
I've put some numbers in your quote to help explore this...
1) Thornhill explains that the surface features are due to electric discharge machining EDM of
rock.
Quote:
The single most dramatic prediction of the electric comet model is this: onclose inspection a comet nucleus will reveal the well-defined effects of theelectrical arcs that progressively etch away the surface and accelerate materialinto space.
From the electrical vantage point, comets Wild 2 and Tempel 1 are“low voltage comets,” but even in these cases the etching process has beenmore than sufficient to make our case.On viewing the close-ups of Wild 2, several scientists initially declared thatthe craters were the result of impacts.
But a small rock will not attract impac-tors, and it is inconceivable that such a small body could have been subjectedto enough projectiles to cover it, end to end, with craters. And even if the in-conceivable actually occurred, all surface relief would be quickly degraded bysublimation of the ices that are assumed to be responsible for the cometarydisplay.
The nucleus of Wild 2 was, in the words of team members, “covered withspires, pits and craters,” features that are more likely for a solid rock than amelting chunk of ice.
|
(2)
The surface could be just erosion of soft material from harder packed material due to sublimation processes.
Yeah it could be... but it's a BIG BIG stretch to suggest these surface features are erosion from sublimation
From Deep Impact Team
http://stardust.jpl.nasa.gov/news/news116.html
Quote:
|
But the biggest surprise discovered during the flyby came with the comet images (72 taken during the pass). The camera team, led by JPL's longtime comet expert, Ray Newburn, had expected that the comet would be a rather bland object looking somewhat like a black potato. What we saw, even in the very first picture sent back, was quite dramatic. We saw kilometer-sized deep holes bounded by vertical and even overhanging cliffs; flat topped hills surrounded by cliffs; spiky pinnacles hundreds of meters tall, pointed skyward:
|
If you still think sublimating erosion causes those.... hey go for it... I'm sliding over to the rock side on that one...
(3)
What large spikes are you referring to?
from above: "spiky pinnacles hundreds of meters tall, pointed skyward"
again... sublimating ice erosion? hmmm .... again go for it.... i'm rock on that one too..
Thornhill's Electrical model predicted these features.... and with EDM you can get the same features in a lab experiment.
And another thing that fits is... the electrostatic
even scattering of dust... (why we found big puffs of dust).... ironically some here would know that this is the EXACT method we use to coat telescope mirrors.
In response to Lez... have a read of this post... if you can tell me how whipple's model matches those VASTLY SURPRIZING facts... please tell me and NASA's expert Ray Newburn........ hmm... maybe this is how science works... maybe not... but hey.. come along and explore it'll be fun.... and i promise, we can all make our own minds up... I'll even let you bring that nifty razor of yours ;-)
Quote:
|
This just gets more interesting doesn't it!?
|
you betcha! ;-)
Surely it doesn't hurt to do a little amatuer science, in the amatuer science forum?