If there were a lightning on Mars, we would not see it on a photograph
of Mars Global Surveyor or Mars Express, execept maybe one single bright
pixel, because these pictures are recorded line by line, and the time
a lightning lasts is too short to be seen in more than one line.
But lightnings could be easily detected by the radio waves they emit.
I have no Idea if such observations have been carried out on Mars.
Well it's a moot point:-
Quote:- "Dust adhesion/cohesion, atmospheric transport and
electrical storms on Mars may all be aspects of the same phenomena:
the electrical activity of the suspended dust. Investigations are
underway in the Mars simulation laboratory, which can quantify this
electrification with the use of Mars analogue dust. "
firstname.lastname@example.org (Ron) wrote in message
Perhaps the silica was fused by the action of atmospheric oxygen
on the primordial silicon emanating from a volcano.
The pores remind me of pumice particles which may still harbor
a few intact pumice bubbles containing the primordial
constituents of the planetary interior. Higher than atmospheric
concentration of neon in the particles would lend credence to
this speculation. John Curtis
Check out this colorized shot where the spheres appear blue (handy for
spotting them). They are evidently weathering out of the outcrop rocks, in
this case "Snout." Several can be seen jutting out of the sides of the rock.
The rock looks very weak.
I will suggest this last origin - melted sediment from a meteor-impact.
The pores could be trapped initial porosity of the sediment. The green color
associates to a welth of green ironrich melts and minerals.
There is not much likeness to the melted spheres in the volcanic ash I have
seen - but I havn't seen much though!
in the lower right quadrant, just below the middle of the airbag drag
marks, there is a series of oddly regular pairs of white dots in the
Some people I have shown this to agree that it might be a fossil,
others are skeptical.
Can anyone think of a way to enhance the image to better discern its
Could NASA be convinced to send Spirit back for a close-up?
Many of you have now had a chance to see the tiny spheres in the soil and in
the rock outcrops in photos taken by the Mars Opportunity rover. I have
found some interesting suggestions for what these spheres may be in the
following link (all of you kooks out there, please note that most, if not
all of these suggestions are tongue and cheek, and are meant for your
enjoyment, not for serious discussion):
How do you get linked to such a vivid discussion?
I read all the posts and am left more perplexed than ever.
The spherolitic lappili seems intriguing ... exept that it involves water
Now, as with the cohesive soil, it would be nice to get some follow-up info
I lost the link to the Australian geologist who worked on
mass-movements/slides of sediments with a clathrat/CO2-ice component - but
CO2 hail may not be far off either. ..
If the Mars' atmosphere just vanishes at the poles as CO2 ice/snow .......
There is no fluid fase of CO2 at the surface, but I keep turning back to
ground-fluid movements as a participant in aggregating the solid
'sedimentary' outcrop - the internal temperature may be high enough to make
a fluid fase of water, but I'm not sure if the pressure would be high enough
to create a fluid CO2 fase.
Plenty of room for speculation ....
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