More Comet Stuff

[uniface]

In the April Geology, researchers describe finding chemical similarities in the cores between a layer corresponding to 1908, when a 50,000-metric-ton extraterrestrial object exploded over Tunguska, Siberia, and a deeper stratum dating to 12,900 years ago. They argue that the similarity is evidence that an object weighing as much as 50 billion metric tons triggered the Younger Dryas, a millennium-long cold spell that began just as the ice age was loosing its grip (SN: 6/2/07, p. 339).

Precipitation that fell on Greenland during the winter after Tunguska contains a strong, sharp spike in ammonium ions that can’t be explained by other sources such as wildfires sparked by the fiery explosion, says study coauthor Adrian Melott, a physicist of the University of Kansas in Lawrence.

“There’s a remarkable peak of ammonium ions in ice cores from Greenland at the beginning of the Younger Dryas,” comments Paul Mayewski, a glaciologist at the University of Maine in Orono who was not involved in the new study. The new findings are “a compelling argument that a major extraterrestrial impact occurred then,” he notes.


http://www.wired.com/wiredscience/2010/ ... z0nLJ6d9pM

[Minimalist]

The Club is jumping up and down swearing it didn't happen.




So obviously it did.

[Rokcet Scientist]

How about renaming this board "Paleo CSI"...?

[E.P. Grondine]

Hi uniface -

It was not one big object, but a whole bunch of Tunguska class impactors (60 meter diameters or so) and a few big pieces.

Go over to http://cosmictusk.com, go back a few pages, and Napier gives the analysis of Comet Encke's breakup and the YD impacts.

Min, this has been a 13 year battle for me, and its far from over yet - work on the smaller impacts is still not being funded.

You'll also see the dead car special on my book at the Tusk, which is the same special that I offered to you here. My thanks to all of you for your purchases, and may I suggest that my book also makes a great gift for your friends as well? Just tell me who to sign it to.

[uniface]

Thanks, E.P.

[kbs2244]

What goes around, comes around?
There is a series of cycles?
“Wheels within wheels.”
“For everything there is a time”….
Is 2012 a peak in the coordination of these cycles?

This whole study of repeated occurrences, at differing cycles, is getting kind of creepy to me.

Is there a straight up, real world, site out there that collects all these findings?
I don’t mean people selling crystals and feather headdresses.
But a NASA type, hard science, collection of the facts, without any editorial comment?
(This is not to say that NASA doesn’t have it’s faults. Maybe JPL?)

[E.P. Grondine]

What goes around, comes around?
There is a series of cycles?
“Wheels within wheels.”
“For everything there is a time”….
Is 2012 a peak in the coordination of these cycles?

This whole study of repeated occurrences, at differing cycles, is getting kind of creepy to me.

Is there a straight up, real world, site out there that collects all these findings?
I don’t mean people selling crystals and feather headdresses.
But a NASA type, hard science, collection of the facts, without any editorial comment?
(This is not to say that NASA doesn’t have it’s faults. Maybe JPL?)

kb - there's a whole cult archaeology industry that thrives on making people afraid and then
selling them their fears. Its all BS, most of it generated from memories of ancient impacts of fragments of Comet Encke and asteroids, the rest of it from theosophist nonsense.

Do you have a car wreck every time your odometer turns over? Well, the Maya remembered when stuff from space hit, and gave us the dates - they're in my book. Guess what? None of them are 0.0.0.0.0.0.

What the ancient Maya would do is conduct human sacrifice when the calendar turned to ensure that nothing would hit in the next time period, but the Maya themselves were pretty fed up with this nonsense when the Spanish showed up.

Go to New Age Frauds and Plastic Shamans - the Maya think its all gringo craziness.

Or go to the Aztlan archives, where real Mayanists will further enlighten you further on this crap.

NASA's David Morrison also had a site up on this 2012 BS.

The real worry is Comet Schwassmann Wachmann 3, and the Earth will be in its debris stream in 2022.

SW3 will also pass into the inner solar system in 2011, but on the other side from the Earth, so no worry then, but you can be sure these con artists will be out pushing their wares.

[Rokcet Scientist]

Is there a straight up, real world, site out there that collects all these findings?
I don’t mean people selling crystals and feather headdresses.
But a NASA type, hard science, collection of the facts, without any editorial comment?
(This is not to say that NASA doesn’t have it’s faults. Maybe JPL?)

NASA and JPL, and similar 'bodies', have overbearing political and/or commercial motives.
I support that the academic world, the universities, seeks to be much more at the cutting edge of science and scientific developments, and not leave that to NASA, JPL, Boeing, and other such power players.
Universities, because of their annual fresh influx of new ideas and critical observers, are best positioned to avoid the pitfalls and arteriosclerosis of conservatism, the nemesis of scientific progress.