by Stephen Smith
Jan 29, 2008
from
Thunderbolts Website
The deeply cratered
surface of Saturn's moon Phoebe.
Credit: NASA/JPL
What could have created
the giant logarithmic spiral carved into Saturn's small but
enigmatic moon?
Saturn's outer moon, Phoebe is very small, only 220 kilometers in
diameter. Its gravity is a mere .05m/s2, compared to the 9m/s2 we
experience here on Earth. While the majority of Saturn's other moons
are quite reflective of visible light, Phoebe is as black as coal,
making it one of the darkest objects in the solar system.
Based on data collected by Cassini,
NASA scientists describe Phoebe as
"very strange" and probably a captured moon, rather than having
formed along with its parent planet.
Said Torrence Johnson, a
Cassini team member at JPL:
"And what it's told us is that it's a
collection of ice and rock and probably carbonaceous compounds. We
believe this object has many characteristics in common with things
like Pluto and (Neptune's moon) Triton in the outer solar system. In
other words, it's a first look at one of these denizens of the outer
solar system that we've (seen previously) only from afar."
A number of huge craters mark Phoebe's surface, making it look very
much like the heavily cratered surfaces of some asteroids. Just as
one must ask why the asteroids were not destroyed by the impacts,
one must ask why Phoebe was not blown apart by whatever "impact"
events excavated these craters.
Phoebe's dark surface is also
reminiscent of comet Wild 2's surface (below image), revealed when the
Stardust probe made its close
approach on January 2, 2004. The dark, cratered terrain on both
bodies gives them the appearance of twins, contrary to the
expectations of NASA observers that Wild 2 would have a "snowball"
composition.
Images from the Cassini spacecraft depict a moon that has features
like those found on others we have mentioned in recent articles.
Some look very much like the craters on Mars, with similar
morphology. The crater rims have alternating striations, with steep
gullies running down one side and hard edges that appear as if they
were cut into the rock and ice (below images).
What appear to be
rounded boulders lie inside some of the craters as well as in the
faces of the crater walls.
A closer examination
casts doubt on the notion that the largest crater could have been
created by an object smashing into Phoebe.
The
alternative - formation by plasma discharge - is well supported. The
most obvious evidence is the spiral-shaped crater rim and the
steeply carved cliffs. These are not features expected under
the
impact hypothesis.
The visual evidence is
consistent with a huge electric arc cutting a long chain of craters
into one hemisphere, ending in the winding curve and the narrow
canyon walls. Of course, the shallow craters, the overlapping rims
and the lack of impact debris are also important considerations in
the theory of electrical effects, not only on Phoebe but the rest of
Saturn's moons as well.
As electrical theorist Wal Thornhill recently wrote:
"The electric
universe model explains the craters as Phoebe's birthmarks. It
is a model supported by examination of spark-machined surfaces.
Just as stars are observed to do, gas giant planets may also
expel a jet of matter during periods of electrical instability.
Accretion of matter in the jet is mediated by the
electromagnetic pinch effect and electrostatic deposition. Both
of these mechanisms are far superior to accretion by impacts
(tending to shatter and scatter instead of to accrete).
Electrostatic
deposition easily creates the layering seen in all rocky objects
to date.
Electrical discharges between the parent and departing
child carve out the circular craters. Because they are not
formed by a sudden mechanical impact, the craters are neat and
do not cause disruption to adjacent craters or fill them with
debris as we see on Phoebe."
By thinking only in
terms of meteor impacts, landslides and other familiar geological
forces, NASA is ignoring the one possibility that makes all
the disparate features we see cohesive:
an electrically dynamic
solar system in its formative phases, when
cosmic thunderbolts carved the surfaces of planets and moons.
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