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1984 Nasa Paper on Galactic Plane Ossicillations Causing Mass Extincitions
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BeelzeBob Registered User User ID: 14698 03-05-2012 05:34 PM
Posts: 572
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RE: 1984 Nasa Paper on Galactic Plane Ossicillations Causing Mass Extincitions
LoP Guest Wrote:If the "extinction cycle" happens each 30 million years, when did the last big extinction happened?
Don't tell me it was about 30 million years ago...

It sounds like we're near the crossing but in a relatively non-dense area at the moment. Also, at the end of the article, they also make reference to us being mid-way between periods. I need to go double check if this is the plane crossing or some other cycle.
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gesture Registered User User ID: 22769 03-05-2012 05:34 PM
Posts: 777
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RE: 1984 Nasa Paper on Galactic Plane Ossicillations Causing Mass Extincitions
From:
The Sun's motion perpendicular to the galactic plane
<snip>
John N. Bahcall* & Safi Bahcall†
*Institute for Advanced Study, and †Princeton High School, Princeton, New Jersey 08540, USA
The period and amplitude of the Sun's motion perpendicular to the galactic plane are important parameters in some explanations of the terrestrial mass extinctions and cratering records1–5. Here we have calculated the range of periods and vertical excursions that are consistent with the distributions of tracer stars in the Galaxy and have also evaluated the probable phase jitter in the solar period. We find acceptable half-periods for the vertical oscillation that range from 26 to 37 Myr (including the range of periods that have been inferred from the terrestrial records on mass extinctions and on cratering), maximum heights above the plane from 49 to 93 pc, and an average phase jitter per half-period of the order of 6–9%. The largest uncertainty in all these calculations is caused by the unknown distribution of the unseen mass that must be postulated to explain the distribution of observed stars6–7. For all the models we consider, the most recent passage of the Sun through the galactic plane occurred in the past 3 Myr provided only that the present position of the Sun is between 0 and 20 pc above the plane. We extend the argument of Thaddeus and Chanan8 to show that the apparent periodicity in the mass extinction and cratering records cannot be caused by an population of objects (observed or unobserved) that contributes a major fraction of the total mass density at the solar vicinity.
<snip>
Download full article in pdf format:
Nature International Weekly Journal of Science, 22 August 1985 Vol 316 No 6030
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Smilin' Eyes Registered User User ID: 15593 03-05-2012 05:38 PM
Posts: 10,362
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RE: 1984 Nasa Paper on Galactic Plane Ossicillations Causing Mass Extincitions
http://www.space.com/7708-fluffy-mystery...olved.html
Using data from Voyager, we have discovered a strong magnetic field just outside the solar system," explained Merav Opher, a NASA Heliophysics Guest Investigator from George Mason University. "This magnetic field holds the interstellar cloud together ["The Fluff"] and solves the long-standing puzzle of how it can exist at all."
The Fluff is much more strongly magnetized than anyone had previously suspected," Opher said. "This magnetic field can provide the extra pressure required to resist destruction."
Opher and colleagues detail the discovery in the Dec. 24 issue of the journal Nature.
NASA's two Voyager probes have been racing out of the solar system for more than 30 years. They are now beyond the orbit of Pluto and on the verge of entering interstellar space. During the 1990s, Voyager 1 became the farthest manmade object in space.
The Voyager craft, racing in opposite directions, have revealed among other things that the bubble around our solar system is squashed.
"The Voyagers are not actually inside the Local Fluff," Opher said. "But they are getting close and can sense what the cloud is like as they approach it."
The Fluff is held at bay just beyond the edge of the solar system by the sun's magnetic field, which is inflated by solar wind into a magnetic bubble more than 6.2 billion miles wide (10 billion km). Called the "heliosphere," this bubble protect the inner solar system from galactic cosmic rays and interstellar clouds. The two Voyagers are located in the outermost layer of the heliosphere, or "heliosheath," where the solar wind is slowed by the pressure of interstellar gas.
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Diana Highnight Registered User User ID: 70178 03-05-2012 05:38 PM
Posts: 4,316
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RE: 1984 Nasa Paper on Galactic Plane Ossicillations Causing Mass Extincitions
Thank you for the PIN, mods, I appreciate it!
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LoP Guest lop guest User ID: 80130 03-05-2012 05:41 PM
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RE: 1984 Nasa Paper on Galactic Plane Ossicillations Causing Mass Extincitions
Diana Highnight Wrote:If Skippy (who I love) posted this, it would be pinned by now...that's all I'm sayin.
Pins are queer anyway. If the info is good, people will look and they will discuss and it will stay around as long as it should. That is all I am saying.
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LoP Guest lop guest User ID: 81067 03-05-2012 05:50 PM
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RE: 1984 Nasa Paper on Galactic Plane Ossicillations Causing Mass Extincitions
LoP Guest Wrote:Diana Highnight Wrote:If Skippy (who I love) posted this, it would be pinned by now...that's all I'm sayin.
Pins are queer anyway. If the info is good, people will look and they will discuss and it will stay around as long as it should. That is all I am saying.
It ties in with Skippy's 'Pole Shift'... crossing the galactic plane being the cause thereof....
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Diana Highnight Registered User User ID: 70178 03-05-2012 05:56 PM
Posts: 4,316
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RE: 1984 Nasa Paper on Galactic Plane Ossicillations Causing Mass Extincitions
LoP Guest Wrote:LoP Guest Wrote:Diana Highnight Wrote:If Skippy (who I love) posted this, it would be pinned by now...that's all I'm sayin.
Pins are queer anyway. If the info is good, people will look and they will discuss and it will stay around as long as it should. That is all I am saying.
It ties in with Skippy's 'Pole Shift'... crossing the galactic plane being the cause thereof....
Indeed, it does. It also ties in with Smilin Eye's Fluff--i.e. dense interstellar plasma cloud that seems to be heaviest at the galactic plane...
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Sunny Registered User User ID: 82076 03-05-2012 05:59 PM
Posts: 17,057
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RE: 1984 Nasa Paper on Galactic Plane Ossicillations Causing Mass Extincitions
Diana Highnight Wrote:LoP Guest Wrote:LoP Guest Wrote:Pins are queer anyway. If the info is good, people will look and they will discuss and it will stay around as long as it should. That is all I am saying.
It ties in with Skippy's 'Pole Shift'... crossing the galactic plane being the cause thereof....
Indeed, it does. It also ties in with Smilin Eye's Fluff--i.e. dense interstellar plasma cloud that seems to be heaviest at the galactic plane...
The space songs we've been haring?
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Smilin' Eyes Registered User User ID: 15593 03-05-2012 06:00 PM
Posts: 10,362
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RE: 1984 Nasa Paper on Galactic Plane Ossicillations Causing Mass Extincitions
Sunny Wrote:Diana Highnight Wrote:LoP Guest Wrote:It ties in with Skippy's 'Pole Shift'... crossing the galactic plane being the cause thereof....
Indeed, it does. It also ties in with Smilin Eye's Fluff--i.e. dense interstellar plasma cloud that seems to be heaviest at the galactic plane...
The space songs we've been haring?
Everything has a "frequency" per se. So yes.
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Diana Highnight Registered User User ID: 70178 03-05-2012 06:01 PM
Posts: 4,316
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RE: 1984 Nasa Paper on Galactic Plane Ossicillations Causing Mass Extincitions
Smilin Eyes Wrote:Sunny Wrote:Diana Highnight Wrote:Indeed, it does. It also ties in with Smilin Eye's Fluff--i.e. dense interstellar plasma cloud that seems to be heaviest at the galactic plane...
The space songs we've been haring?
Everything has a "frequency" per se. So yes.
Indeed. Some speculate that the space sounds are in fact the plasma crashing into our magnetic field--space thunder.
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Smilin' Eyes Registered User User ID: 15593 03-05-2012 06:07 PM
Posts: 10,362
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RE: 1984 Nasa Paper on Galactic Plane Ossicillations Causing Mass Extincitions
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DanfromtheHills Registered Moran User ID: 50292 03-05-2012 06:36 PM
Posts: 25,657
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Diana Highnight Registered User User ID: 70178 03-05-2012 06:42 PM
Posts: 4,316
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RE: 1984 Nasa Paper on Galactic Plane Ossicillations Causing Mass Extincitions
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tethys Registered User User ID: 59284 03-05-2012 06:47 PM
Posts: 6,367
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RE: 1984 Nasa Paper on Galactic Plane Ossicillations Causing Mass Extincitions
DanfromtheHills Wrote:Smilin Eyes Wrote:Diana Highnight Wrote:Indeed. Some speculate that the space sounds are in fact the plasma crashing into our magnetic field--space thunder.
Exactly. But how do you explain that to some of the other posters here? I have a just tad bit of knowledge of the electric universe and plasma cosmology; I've read extensively on it for the past 2 years and can grasp the concepts. But how do you condense that for other people?
BTW, thank you I've felt like I was stagnating, needing a new injection of hope for this forum that intellectual discussion can still happen here. 
I like that concept alot.
Friction, like the strings on a violin. As the heliosphere merges/passes through the denser material near the galactic equator, interactions between the local fluff, and the heliosphere should produce vibrations. I'm guessing that these could either be sound, or maybe even light, like the auroras.
http://www2.gi.alaska.edu/infrasound/Infrasound253.htm
Over the past 35 years at many different high latitude infrasonic arrays in Alaska, Canada, Sweden and Antarctica. These high trace-velocity infrasound episodes are often directly associated with periods of geomagnetic and auroral activity. They have recently been observed throughout the year at the IMS/CTBT infrasonic arrays at I53US in Fairbanks and I55US in Antarctica. They have a maximum frequency of occurrence around the equinoxes.
http://geochangemag.org/index.php?option...s&Itemid=9
STRANGE SOUNDS IN SKY EXPLAINED BY SCIENTISTS
We have analyzed records of these sounds and found that most of their spectrum lies within the infrasound range, i.e. is not audible to humans. What people hear is only a small fraction of the actual power of these sounds. They are low-frequency acoustic emissions in the range between 20 and 100 Hz modulated by ultra-low infrasonic waves from 0.1 to 15 Hz. In geophysics, they are called acoustic-gravity waves; they are formed in the upper atmosphere, at the atmosphere-ionosphere boundary in particular.
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LoP Guest lop guest User ID: 82063 03-05-2012 06:50 PM
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RE: 1984 Nasa Paper on Galactic Plane Ossicillations Causing Mass Extincitions
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