BloginService.com | Back to Discussion Board
Send this Complete Page to A Friend
From: broali4xx (68.12.251.128)
Subject: Sun NOT Flipping Magnetic Polarity!
Date: December 13, 2005 at 8:03 am PST
Members, (IMPORTANT PLEASE READ!)*****
(IMPORTANT)
First of all I give ZetaTalk 100% of the credit because before
them I knew hardly zero about the nature of Space/Solar
magnetism or etc. Let me see if I have learn a few things:
If the Sun' magnetic poles do do a flip-flop as NASA is now
postulating, then you can bet your dress or pants that every
planet in the solar system will likewise do a magnetic flip.
Also, and this is the hard part, if the sun and her planets
should do a magnetic flip, then the WHOLE Galaxy will most
likely have to mimic and likewise do a flip! At one time
didn't they say that all the stars revolved around the Earth?
Good GOD, the stars must have been traveling 900 light years a
second at the distance some were from Earth!
And so as NASA knows that Earth as Zetas of ZetaTalk are
saying is about to do a 270 degree magnetic roll - with three
days of darkness to boot. To cover their NASA' tail (as in
Planet X tail) , again they are throwing us straps of rotten
Bologna.
It must not be very long before the real drama begins for our
Earth to start aligning (rolling) magnetically with the north
pole of rouge planet X, and thus NOT because the SUN has done
a local imaginary magnetic flip-flop!
I just hope that my former high school teacher is not reading
this because he said that I wasn't capable of thought! Also,
now I understand why Min. Farrakhan said that the educational
system is nigh akin to Killing-Fields for the black race! That
means the school system is curtailing the learning potential
of minorities just as NASA is not relaying the whole truth to
the public about hardly anything - and I may add that they are
doing so just for the SPORT of it!
sallam/namaste/lol
http://science.nasa.gov/headlines/y2001/ast15feb_1.htm
The Sun Does a Flip
NASA scientists who monitor the Sun say that our star's
awesome magnetic field is flipping -- a sure sign that solar
maximum is here.
Listen to this story (requires RealPlayer) February 15, 2001 -- You can't tell by looking, but scientists
say the Sun has just undergone an important change. Our star's
magnetic field has flipped.
The Sun's magnetic north pole, which was in the northern
hemisphere just a few months ago, now points south. It's a
topsy-turvy situation, but not an unexpected one.
"This always happens around the time of solar maximum," says
David Hathaway, a solar physicist at the Marshall Space Flight
Center. "The magnetic poles exchange places at the peak of the
sunspot cycle. In fact, it's a good indication that Solar Max
is really here." Sign up for EXPRESS SCIENCE NEWS delivery
Above: Sunspot counts, plotted here against an x-ray image of
the Sun, are nearing their maximum for the current solar
cycle. [more information]
The Sun's magnetic poles will remain as they are now, with the
north magnetic pole pointing through the Sun's southern
hemisphere, until the year 2012 when they will reverse again.
This transition happens, as far as we know, at the peak of
every 11-year sunspot cycle -- like clockwork.
Earth’s magnetic field also flips, but with less regularity.
Consecutive reversals are spaced 5 thousand years to 50
million years apart. The last reversal happened 740,000 years
ago. Some researchers think our planet is overdue for another
one, but nobody knows exactly when the next reversal might
occur.
Although solar and terrestrial magnetic fields behave
differently, they do have something in common: their shape.
During solar minimum the Sun's field, like Earth's, resembles
that of an iron bar magnet, with great closed loops near the
equator and open field lines near the poles. Scientists call
such a field a "dipole." The Sun's dipolar field is about as
strong as a refrigerator magnet, or 50 gauss (a unit of
magnetic intensity). Earth's magnetic field is 100 times
weaker.
Below: The Sun's basic magnetic field, like Earth's, resembles
that of a bar magnet.
When solar maximum arrives and sunspots pepper the face of the
Sun, our star's magnetic field begins to change. Sunspots are
places where intense magnetic loops -- hundreds of times
stronger than the ambient dipole field -- poke through the
photosphere.
"Meridional flows on the Sun's surface carry magnetic fields
from mid-latitude sunspots to the Sun's poles," explains
Hathaway. "The poles end up flipping because these flows
transport south-pointing magnetic flux to the north magnetic
pole, and north-pointing flux to the south magnetic pole." The
dipole field steadily weakens as oppositely-directed flux
accumulates at the Sun's poles until, at the height of solar
maximum, the magnetic poles change polarity and begin to grow
in a new direction.
Hathaway noticed the latest polar reversal in a "magnetic
butterfly diagram." Using data collected by astronomers at the
U.S. National Solar Observatory on Kitt Peak, he plotted the
Sun's average magnetic field, day by day, as a function of
solar latitude and time from 1975 through the present. The
result is a sort of strip chart recording that reveals
evolving magnetic patterns on the Sun's surface. "We call it a
butterfly diagram," he says, "because sunspots make a pattern
in this plot that looks like the wings of a butterfly."
In the butterfly diagram, pictured below, the Sun's polar
fields appear as strips of uniform color near 90 degrees
latitude. When the colors change (in this case from blue to
yellow or vice versa) it means the polar fields have switched
signs. Above: In this "magnetic butterfly diagram," yellow regions
are occupied by south-pointing magnetic fields; blue denotes
north. At mid-latitudes the diagram is dominated by intense
magnetic fields above sunspots. During the sunspot cycle,
sunspots drift, on average, toward the equator -- hence the
butterfly wings. The uniform blue and yellow regions near the
poles reveal the orientation of the Sun's underlying dipole
magnetic field. [more information]
The ongoing changes are not confined to the space immediately
around our star, Hathaway added. The Sun's magnetic field
envelops the entire solar system in a bubble that scientists
call the "heliosphere." The heliosphere extends 50 to 100
astronomical units (AU) beyond the orbit of Pluto. Inside it
is the solar system -- outside is interstellar space.
"Changes in the Sun's magnetic field are carried outward
through the heliosphere by the solar wind," explains Steve
Suess, another solar physicist at the Marshall Space Flight
Center. "It takes about a year for disturbances to propagate
all the way from the Sun to the outer bounds of the
heliosphere."
Because the Sun rotates (once every 27 days) solar magnetic
fields corkscrew outwards in the shape of an Archimedian
spiral. Far above the poles the magnetic fields twist around
like a child's Slinky toy.
Left: Steve Suess (NASA/MSFC) prepared this figure, which
shows the Sun's spiraling magnetic fields from a vantage point
~100 AU from the Sun.
Because of all the twists and turns, "the impact of the field
reversal on the heliosphere is complicated," says Hathaway.
Sunspots are sources of intense magnetic knots that spiral
outwards even as the dipole field vanishes. The heliosphere
doesn't simply wink out of existence when the poles flip --
there are plenty of complex magnetic structures to fill the
void.
Or so the theory goes.... Researchers have never seen the
magnetic flip happen from the best possible point of view --
that is, from the top down.
But now, the unique Ulysses spacecraft may give scientists a
reality check. Ulysses, an international joint venture of the
European Space Agency and NASA, was launched in 1990 to
observe the solar system from very high solar latitudes. Every
six years the spacecraft flies 2.2 AU over the Sun's poles. No
other probe travels so far above the orbital plane of the
planets.
"Ulysses just passed under the Sun's south pole," says Suess,
a mission co-Investigator. "Now it will loop back and fly over
the north pole in the fall."
Right: Following an encounter with Jupiter in 1992, the
Ulysses spacecraft went into a high polar orbit. It's maximum
solar latitude is 80.2 degrees south. [more]
"This is the most important part of our mission," he says.
Ulysses last flew over the Sun's poles in 1994 and 1996,
during solar minimum, and the craft made several important
discoveries about cosmic rays, the solar wind, and more. "Now
we get to see the Sun's poles during the other extreme: Solar
Max. Our data will cover a complete solar cycle."
To learn more about the Sun's changing magnetic field and how
it is generated, please visit "The Solar Dynamo," a web page
prepared by the NASA/Marshall solar research group. Updates
from the Ulysses spacecraft may be found on the Internet from
JPL at http://ulysses.jpl.nasa.gov.
 Blogin Broadcasting Service
Amateur Radio at its Best...
Straight from the Heart!
BBSRadio.com
© “If it’s not mainstream it’s on BBSRadio.com™” |
Follow Ups:
Post a Followup
|
