Mercury Updates

Historic planetary instability and catastrophe. Evidence for electrical scarring on planets and moons. Electrical events in today's solar system. Electric Earth.

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Iron snow maintains Mercury's magnetic field!

Unread postby nick c » Sat May 10, 2008 12:20 pm

I thought there was a Mercury thread here someplace, but I could not find it.

http://www.astronomy.com/asy/default.aspx?c=a&id=6927
This article is another example of mainstream's tendency to come up with ad hoc explanations to account for anomalies.
In this case, they once again resort to the technique of postulating a process as taking place in the hidden interior where it cannot be disproven by observations.
Coloration my own.
The movement of this iron snow could be responsible for Mercury's mysterious magnetic field, say researchers from the University of Illinois and Case Western Reserve University.

They really are desperate!

Made mostly of iron, Mercury's core is also thought to contain sulfur, which lowers the melting point of iron and plays an important role in producing the planet's magnetic field.
This is stated as a fact, but the fact is:
we know very little about its core


"Our findings provide a new context into which forthcoming observational data from NASA's MESSENGER spacecraft can be placed, "Li said. "We can now connect the physical state of our innermost planet with the formation and evolution of terrestrial planets in general."

This means that papers will be published in professional journals with complex models described by elaborate mathematical calculations all leading to erroneous conclusions because they are based on an incorrect initial assumption.

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Re: Iron snow maintains Mercury's magnetic field!

Unread postby Grey Cloud » Sat May 10, 2008 12:42 pm

The mind boggles.
A snowball fight would certainly sort the men from the boys.
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Re: Iron snow maintains Mercury's magnetic field!

Unread postby Solar » Sat May 10, 2008 1:11 pm

New scientific evidence suggests that deep inside Mercury, iron "snow" forms and falls toward the center of the planet, much like snowflakes form in Earth's atmosphere and fall to the ground.

It's snowing in Mercury's core? :shock:

ROTFL!!!!
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Re: Iron snow maintains Mercury's magnetic field!

Unread postby Grey Cloud » Sat May 10, 2008 2:13 pm

Solar wrote:
New scientific evidence suggests that deep inside Mercury, iron "snow" forms and falls toward the center of the planet, much like snowflakes form in Earth's atmosphere and fall to the ground.

It's snowing in Mercury's core? :shock:

ROTFL!!!!


Didn't you see the forecast? ;)
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Re: Iron snow maintains Mercury's magnetic field!

Unread postby MGmirkin » Sat May 10, 2008 6:17 pm

Grey Cloud wrote:The mind boggles.


It certainly does!

Grey Cloud wrote:A snowball fight would certainly sort the men from the boys.


Iron snowballs? Owwie! :x

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Re: Iron snow maintains Mercury's magnetic field!

Unread postby viscount aero » Mon May 12, 2008 11:25 pm

hahahahahahahahahahaha

"iron snow"

is that like "iron butterfly?"


hahahahahahahahahahahaha

this is science?!
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Re: Iron snow maintains Mercury's magnetic field!

Unread postby MGmirkin » Tue May 13, 2008 12:22 pm

All joking aside, the theory goes that Mercury's core is composed of Iron watered down by Sulfur, if I read it right. And at certain temperatures / densities, the iron will "precipitate" out of solution? OF course the theory is wholly based on assumptions of an internal dynamo that hasn't ever been observed, per se. So, it's all very speculative...

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Mercury Updates

Unread postby seasmith » Thu Jul 03, 2008 11:45 pm

Image

One of the most exciting results announced in Science involves Mercury's magnetic field. Until Mariner 10 discovered Mercury's magnetic field in the 1970s, Earth was the only other terrestrial planet known to have a global magnetic field. Earth's magnetism is generated by the planet's churning hot, liquid-iron core via a mechanism called a magnetic dynamo.
Researchers have been puzzled by Mercury's field because its iron core was supposed to have cooled long ago and stopped generating magnetism. Some researchers have thought that the field may have been a relic of the past, frozen in the outer crust.

MESSENGER data suggest otherwise: Mercury's field appears to be generated by an active dynamo in the planet's core. It is not a relic.

"MESSENGER's measurements indicate that, like Earth, Mercury's magnetic field is mostly dipolar, which means it has a north and south magnetic poles," says lead author Brian Anderson of the Johns Hopkins University Applied Physics Laboratory (APL) in Laurel, Md. "The fact that it is dipolar, and that we did not find the signature shorter-wavelength anomalies that would signify patches of magnetized crust, supports the view that we’re seeing a modern dynamo. We are eager for the October flyby and the year in orbit to see if this is the case elsewhere on the planet and confirm that the field comes from the core."


Image

Cooling of this outsized core has led to a remarkable contraction of the planet, revealing itself in the form of cliff-like "wrinkles" called lobate scarps (pictured right).


Image

http://science.nasa.gov/headlines/y2008/03jul_mercuryupdate.htm?list1066595

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Re: Murcury Updates

Unread postby substance » Fri Jul 04, 2008 2:44 am

Wow, they really have limitless imagination! :shock: That`s actually quite a good start for a sci-fi film, I wonder if anyone has actually started putting a script together to offer it in Hollywood. :lol:
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Re: Mercury Updates

Unread postby GaryN » Sat Jul 05, 2008 11:29 am

Call me cynical, but why would you send a probe billions of miles that will come within a hundred miles or so of a planet, and only equip it with 1 Megapixel cameras? The best images at Messengers closest approach would yield a 20 M/pixel resolution, but I can find no images approaching that, and the best ones look really fuzzy to me.

from btc.montana.edu

"Both of the MDIS cameras have 1024 pixels in each column and 1020 in each row, for a total of over a million pixels per image."
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Re: Mercury Updates

Unread postby Grey Cloud » Sat Jul 05, 2008 4:48 pm

Don't know if you saw this:
Smallest planet shrinks in size
http://news.bbc.co.uk/2/hi/science/nature/7489557.stm
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Re: Mercury Updates

Unread postby substance » Sat Jul 05, 2008 11:52 pm

Am I the only one that thinks you cannot conclude that a whole planet is shrinking just because of some "lobate scraps" or however these things are called, around some craters?! :roll:
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Re: Mercury Updates - Latest News, WATER on Mercury???...

Unread postby davesmith_au » Sun Jul 06, 2008 5:07 am

Well, here's the latest on the MESSENGER findings and of all things, they are now banging on about having found WATER in Mercury's exosphere.

http://www.planetary.org/news/2008/0703_MESSENGER_Scientists_Astonished_to.html

The Planetary Society wrote:As MESSENGER flew past the night side of Mercury in January, its Fast Imaging Plasma Spectrometer (FIPS) scooped up ions from an atmosphere so tenuous that it's usually called an "exosphere." FIPS measured the expected amounts of ions like sodium, potassium, and calcium that had previously been detected in Mercury's exosphere, but to the science team's great surprise there was also water present, and in large amounts. "Nobody expected that. I don't know a single person that did. We were astonished, just astonished," said MESSENGER science team member Thomas Zurbuchen.


This, in my mind, adds serious weight to the reasons Wal Thornhill gives for finding "water" in cometary comas - it's not water, it's ionized particles of the consituents of water, caused by sputtering, from the solar "wind" interacting with the rocky surface. As EU proponents have suggested all along, it's an electrical phenomena.

Funny, NASA scientists are "surprised" by this finding, but I've learned enough about EU for it not to surprise me at all... in fact I distinctly remember thinking about the possibility of them "finding water" when the flyby was done. Time to start writing down my "silly thoughts" I think...

Cheers, Dave Smith.
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Re: Mercury Updates

Unread postby Grey Cloud » Sun Jul 06, 2008 6:31 am

Thanks Dave, your link appears to be the original article which the BBC (British Bullshit Corporation) used for its piece. I had a quick look for it late last night but couldn't find anything.
I also had a look for this but couldn't find it at the time:
viewtopic.php?f=4&t=548&hilit=mercury+snow
[Dave: as an aside, would it be worth re-arranging the Planetary Science section so that each planet has its own sub-section. That way it would be easier to compare and contrast the various press releases pertaining to, e.g. Mercury, and spot contradictions, inconsistencies, etc. We could also keep a running total of the numbers of 'surprised', amazed', astonished', etc.]
Substance wrote:
Am I the only one that thinks you cannot conclude that a whole planet is shrinking just because of some "lobate scraps" or however these things are called, around some craters?!

Nope, the thought crossed my mind too. The Beeb article said:
Data from a flyby of Mercury in January 2008 show the planet has contracted by more than one mile (1.5km) in diameter over its history.

Given that they do not 'know' the planet's history or its original diameter it appears to me to be somewhat problematic to state that it has decreased by any stated amount (never mind one as exact/convenient as 1 mile (would a European Space Agency probe have said 1km?)
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Re: Mercury Updates

Unread postby davesmith_au » Sun Jul 06, 2008 8:19 am

Grey Cloud wrote:[Dave: as an aside, would it be worth re-arranging the Planetary Science section so that each planet has its own sub-section. That way it would be easier to compare and contrast the various press releases pertaining to, e.g. Mercury, and spot contradictions, inconsistencies, etc. We could also keep a running total of the numbers of 'surprised', amazed', astonished', etc.]


Whilst I understand and like the idea, the practicality of re-arranging the forum into planetary sections would be challenging, to say the least. Had that been done as the forum was set up, maybe it would have worked. The other consideration is that many topics discussed can involve a number of different bodies, for example particular features shared by [x] planets/moons.

But a GOOD idea would be for anyone posting something new which is applicable to a single planet or it's moons, to start a new thread in the same manner as this one, eg. "Saturn updates", "Mars updates" etc and those threads could be used for general press-releases etc pertaining to that particular planet.

Cheers, Dave Smith.
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