Deep Impact

The cathode arcs(jets) being straight because that is the shortest discharge path from the negativly charged comet through the sheath(coma) to the positive solar wind. It was interesting(I watched Deep Impact on the net), that the impact was brighter than they expected. What would happen if you tried to discharge a 9 mile long capacitor into a 820 pound piece of copper?

From the electric universe model:

"This is an ideal opportunity to examine the picture of Wild 2 from the perspective of the electric universe model of comets. Briefly, in that model a comet is a highly negatively charged body with respect to the Sun. Like all charged bodies in plasma, a comet will be enveloped in a plasma sheath (the coma) that limits the reach of the comet's electric field. A forbidden oxygen line was discovered in Comet Austin's coma. "Forbidden lines" are spectral signatures that are not expected in space because here on Earth they are found only within strong electric fields. To astronomers' surprise, forbidden lines are common in space, not only in comets, but in nebulae and galaxies. A cometary display is produced when the nucleus discharges at a rate sufficient to generate a visible tail. The dust and gases that form the comet's tail are not evaporated by the heat of the sun, but instead are electrically "machined" from the nucleus by cathode arcs."
www.holoscience.com/news.php?article=ayxpdjcb

<blockquote id="quote"><font size="2" face="Verdana, Arial, Helvetica" id="quote">quote:<hr height="1" noshade id="quote"><i>Originally posted by tvanflandern</i>
<br />We have just released our predictions for the <i>Deep Impact</i> mission to crash a probe into a comet nucleus on July 4 and determine what comets are made of. See metaresearch.org/solar%20system/eph/DeepImpact.asp -|Tom|-
<hr height="1" noshade id="quote"></blockquote id="quote"></font id="quote">

It looks like three of the five scenarios can be safely ruled out already. (The comet's still there in one piece and the "aerogel" model is inconsistent with the explosive event.)

The wildcard is the crater size, which NASA says is undetermined due to the dust cloud and shadows. Has anyone heard more about the crater? After initial coverage, the briefings have virtually disappeared and web site updates have slowed to a crawl.

The only reference I heard to crater size was a JPL spokesman saying it's probably "house sized." Unless we're talking Bill Gates' house, this estimate is consistent with TVF's prediction (10-30m), not NASA's (100-250m). Admittedly, I have about 12 hours of NASA TV to catch up on, so maybe it's been discussed in more detail.

I heard you on Coast to Coast, Tom. You sounded pretty confident in the EPH despite the apparently tremendous explosion. Is it safe to say the dust cloud and flash were more intense than you predicted? Was there information presented by JPL in the first 24 hours that made you more confident in the model?

One last note: one of the JPL spokemen said that the impactor was trained on a "bright spot." It sounded like he was saying the probe was guided to the spot, either by JPL or autonomously. I haven't looked at the specs, but wasn't aware of any internal guidance system. Maybe someone can speak to this point.

IF the impactor hit a bright spot--perhaps a pocket of volatiles--how would that affect the EPH's predictions...or would it?

The appearance of Temple 1 is the same as asteroids such as Eros: a melted look. What is the overall albedo of Temple 1, Eros, etc? If it is very low then "brightness" of the impact or selected spots on Temple 1 may not be bright on an absolute scale. A bright spot may not indicate water ice at all but simply the presence of very low quality silica glass. The average melting point of minerals identified on Eros was 1,800 degrees Fahrenheit. The chemical evidence indicates that the birth of asteroids (and now comets) would have involved a temperature of 2,000 to 3,000 degrees Fahrenheit, not 5 degrees Kelvin!

Gregg Wilson

<blockquote id="quote"><font size="2" face="Verdana, Arial, Helvetica" id="quote">quote:<hr height="1" noshade id="quote"><i>Originally posted by Gregg</i>
<br />The appearance of Temple 1 is the same as asteroids such as Eros: a melted look. What is the overall albedo of Temple 1, Eros, etc? If it is very low then "brightness" of the impact or selected spots on Temple 1 may not be bright on an absolute scale. A bright spot may not indicate water ice at all but simply the presence of very low quality silica glass. The average melting point of minerals identified on Eros was 1,800 degrees Fahrenheit. The chemical evidence indicates that the birth of asteroids (and now comets) would have involved a temperature of 2,000 to 3,000 degrees Fahrenheit, not 5 degrees Kelvin!

Gregg Wilson
<hr height="1" noshade id="quote"></blockquote id="quote"></font id="quote">

Apparently, there are several measures of albedo (geometric, polar, radar), so I'm not sure which data are most accurate. Regardless, the vast majority of measured asteroid albedos indicate these bodies reflect, at best, 20% of light (albedo of =&lt;.20). Preliminary estimates of comet surface reflectivity indicate comets are just as dark, or maybe darker. Tom or someone else can correct me if I'm wrong on any of these points.

You're right...brightness is definitely relative. I went through my TiVO'ed NASA TV and didn't find the part where the spokesman mentioned the bright spot. Must've been a part I didn't record.

It's funny...if you Google "asteroid albedo" you get two dozen hits. You get nothing with "comet albedo". Perhaps after astronomers discovered that <b> comet </b> Borrelly is the darkest object in the solar system, the desire to map comet albedos waned. []

This is about the time scientists started grudgingly calling comets "snowy dirtballs" instead of "dirty snowballs." Sneaky.

They said 4 days to download spectrographic data data. I had the foresite to take a couple of screen caps of the impact(should of done more). There is a graph on it but I cant read the letters. Looks like a spectrogram of the impact light. I cant wait to see what they have to say!!!! If you look at the close ups of Tempel1 on Nasa's site, its very cratered and eroded looking. They have not found water on a comet yet.
They have found OH in the coma and tail.

[Originally posted by brantc]
<br />....its very cratered and eroded looking. They have not found water on a comet yet.
They have found OH in the coma and tail

<hr noshade size="1">

If a comet is gravitational accretion of dust and gas near absolute zero, it would be a dust cloud. It would not survive impacts that leave craters, but simply "vaporize" because its gravitational field would be almost zero. The appearance of erosion is easily explained by melting in a zero gravity environment. What would erode it??????

The presence of OH in the coma does not prove the existence of water; it may only indicate metal hydroxides.

Gregg Wilson