Re: [meteorite-list] LUCERNE DRY LAKE crosshair target
On 3/3/2015 9:48 PM, Paul Gessler via Meteorite-list wrote: Ok. someone on here must know the history of the Huge Target crosshairs looking feature on the west side of Lucerne Dry Lake Cambria road runs West off of 247 and almost runs into it. What is it? Art? Paleo art? Modern geo manipulation art or what? Any body who knows please share. According to this guy it was for bombing practice during WWII: http://www.adventureduo.com/2009/05/lucerne-valley-exploration.html -- Greg Crinklaw Astronomical Software Developer Cloudcroft, New Mexico skyhound.com __ Visit the Archives at http://www.meteorite-list-archives.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com https://pairlist3.pair.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] Science Journal: Earth's water didn't come from comets, scientists now say
The answer to your questions is that it isn't definitive at all. That's just the spin that journalists are putting on the story. We now have a small number of data points with regard to the amount of deuterium in comets and asteroids. Based on these data we can only say that we will need many more data points to before we can come to any sort of conclusion, much less one that is definitive. The only thing that is definitive is that the water on earth did not come from 67P. ;-) Greg On 12/12/2014 1:50 PM, Michael Mulgrew via Meteorite-list wrote: I am curious how such a definitive conclusion can be reached from the analysis of a singular cometary body? How many comets are out there floating around the solar system? I guess they are assuming all comets have the same make-up? Seems a bit short sighted to me, considering, for example, how diverse asteroidal composition is. Imagine if we landed a probe on one asteroid, then extrapolated the results of that landing to apply to all asteroids, what a gross neglect of diversity that would be. Hopefully I'm missing something here and someone will chime in and explain it to me. Michael in so. Cal. On Fri, Dec 12, 2014 at 12:43 PM, Shawn Alan via Meteorite-list wrote: Hello Listers Enjoy :) From The New York Times (excerpted): One of the first scientific findings to emerge from close-up study of a comet has all but settled a question that planetary scientists have debated for decades. The new finding, from the European Space Agency’s mission to the little duck-shaped comet called 67P/Churyumov-Gerasimenko, appears to eliminate the possibility that the water in Earth's oceans came from melted comets. http://jacksonville.com/opinion/blog/400564/john-leacock/2014-12-11/science-journal-earths-water-didnt-come-comets Shawn Alan IMCA 1633 ebay store http://www.ebay.com/sch/imca1633ny/m.html Website http://meteoritefalls.com __ Visit the Archives at http://www.meteorite-list-archives.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com https://pairlist3.pair.net/mailman/listinfo/meteorite-list __ Visit the Archives at http://www.meteorite-list-archives.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com https://pairlist3.pair.net/mailman/listinfo/meteorite-list -- Greg Crinklaw Astronomical Software Developer Cloudcroft, New Mexico skyhound.com __ Visit the Archives at http://www.meteorite-list-archives.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com https://pairlist3.pair.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] Not met. Related - Friend On Meteorite List
Sent: Monday, December 08, 2014 10:01 AM Subject: Re: [meteorite-list] Not met. Related - Friend On Meteorite List No other state even comes close to California when it comes to produce production, so it follows that no other states would have to enact protections as tough as California. Don't like it, then stay out of my state (and stop eating fruits, nuts, and vegetables altogether, chances are they were grown here). Michael in so. Cal. On Mon, Dec 8, 2014 at 7:53 AM, Raremeteorites via Meteorite-list wrote: That's California for you. Too much governmental control and wasted tax payer money. They tax (fleece) everything and the roads are crap! I can tell when I am entering California from Arizona or Nevada just by the condition of the roads and the agricultural check points. First you go from a smooth freeway into a patched together, multi-colored, quilted road surface with no shoulders and than go through the indignity of an inspection station just have any American grown produce thrown in the trash. No thanks! Adam - Original Message - From: "Jim Wooddell via Meteorite-list" To: Sent: Monday, December 08, 2014 6:30 AM Subject: Re: [meteorite-list] Not met. Related - Friend On Meteorite List Keeping this meteorite related, the California bug stations even look for firewood coming in from other states. So for example you are planning a meteorite hunting trip into or through California and figure you would like to haul some firewood with you, you might want to know that they may or will seize it at the border inspection stations. Jim Wooddell On 12/8/2014 6:51 AM, Michael Farmer via Meteorite-list wrote: That is a crime, you really want someone to receive and ship goods to you in violation of California law? They could be prosecuted for that. Sent from my iPad On Dec 8, 2014, at 6:55 PM, Michael Blood via Meteorite-list wrote: NOTE: THIS IS NOT METEORITE INFORMATION Hi All, Hope you all had a wonderful Thanksgiving. As some of you know, I grow exotic plants, have a Greenhouse, etc. Unfortunately, CA is THE worst state when it comes To importing plants. __ Visit the Archives at http://www.meteorite-list-archives.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com https://pairlist3.pair.net/mailman/listinfo/meteorite-list __ Visit the Archives at http://www.meteorite-list-archives.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com https://pairlist3.pair.net/mailman/listinfo/meteorite-list __ Visit the Archives at http://www.meteorite-list-archives.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com https://pairlist3.pair.net/mailman/listinfo/meteorite-list __ Visit the Archives at http://www.meteorite-list-archives.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com https://pairlist3.pair.net/mailman/listinfo/meteorite-list __ Visit the Archives at http://www.meteorite-list-archives.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com https://pairlist3.pair.net/mailman/listinfo/meteorite-list __ Visit the Archives at http://www.meteorite-list-archives.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com https://pairlist3.pair.net/mailman/listinfo/meteorite-list -- Greg Crinklaw Astronomical Software Developer Cloudcroft, New Mexico skyhound.com __ Visit the Archives at http://www.meteorite-list-archives.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com https://pairlist3.pair.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] Maximum theoretical Earth impact velocity
There is an all-sky camera at Apache Point Observatory, but it appears to have been turned off until later that night. Observatories use them so that remote observers can monitor the weather. I dug around on the web to see if there is a camera on top of Mount Baldy, perhaps at Magdalene Ridge Observatory, but with no luck. A camera there would be ideally located. At the very least we might be able to tell that it happened over the White Sands Missile Range or not. Greg On 4/14/2014 3:50 PM, Bill Cooke wrote: The information I found some info on the fall and here is some stats... vel 667.2 km/s beg 135.8 km end 40.8 km is from our Fireballs website and is an automatic, obviously incorrect solution to the event. There are 2 NASA cameras in southern New Mexico - one, at NMSU, collected decent data on the event, whereas the other one, located in Mayhill, saw only bright flashes through clouds, very similar to lightning. The automated software did the best it could to calculate a trajectory, but lightning events are often confused with fireballs, and it simply "went home to momma". On the plus side, we have been able to filter out most of the planes :/ If you use the Fireballs website, please look at the videos. If one or more shows lightning, then you know the trajectory is crap. In general, any meteor solution with a speed higher than 72-73 km/s should be regarded with much skepticism. Most all sky meteor cameras are similar to the Sandia design and use relatively low resolution low light level cameras like the Watec 902H2. As a result, meteor trajectory precision is about 100 meters in normal cases, which translates to an uncertainty in speed of 5-10%. As mentioned by others, this affects the semimajor axis and eccenticity (size and shape of orbit) the most, with the orbital angles (inclination, argument of perihelion, and ascending node) being much better determined, usually to the 1% level. These are low precision orbits, good for statistical work, but individual examples should be used with care. Regards, Bill Cooke -- Greg Crinklaw Astronomical Software Developer Cloudcroft, New Mexico skyhound.com __ Visit the Archives at http://www.meteorite-list-archives.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] HUGE Meteor Sighting in Cottonwood AZ - Stats from fall
On 4/13/2014 5:06 PM, Ruben Garcia wrote: Also, the lack of Sonic reports may be due to the fact that it landed where no one lives and not that it didn't produce a sonic boom. For what it's worth, I heard what sounded like distant thunder last night at about the right time. This from Cloudcroft. The data described earlier is from ASGARD: http://fireballs.ndc.nasa.gov/ Follow the 20140413 link and look for the 20140413 03:04:25 UTC event. I believe this is an automated system that did the calculation based on the single NMSU camera only. I'm interested in this one because it is in my back yard; in the general area where I have previously hunted. BTW the NMSU camera shows the fireball moving almost directly away. This gives us a radial direction away from the camera. A very preliminary analysis: when I combine this with the nearby visual reports, it appears most likely that any meteorites fell on the White Sands Missile Range. If so, even if it fell through somebody's roof we are not likely going to have access to the area. Greg -- Greg Crinklaw Astronomical Software Developer Cloudcroft, New Mexico skyhound.com __ Visit the Archives at http://www.meteorite-list-archives.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] Fake Norway Rock
On 4/10/2014 2:15 PM, Joshua Tree Earth & Space Museum wrote: I stand by my conclusion. Anyone who looks at a video showing a pebble popping out of a parachute, then concludes it was a meteoroid in dark flight has been duped. Nobody has made such a conclusion, at least not posted to this forum. For that matter, if you listen carefully, none of the scientists or parachutists involved with the original investigation made such a conclusion either. We all knew it was highly unlikely right from the start. You surely are't alone in that. There seems to be a cultural divide at work here. People love absolutes, but there are few if any absolutes in the real world. Recognizing the possibility exists, however vanishingly small, that this was a meteorite, is how a scientist is trained to report things. That's all Chris was doing. It is an important part of being intellectually honest. The chance may be one in a billion, but that's not the same as zero. The evidence does not yet completely rule out that this rock was a meteorite. Please consider that stating this fact is not the same thing as believing that the rock was a meteorite after all, nor even that there is more than the tiniest chance that it is. Greg -- Greg Crinklaw Astronomical Software Developer Cloudcroft, New Mexico skyhound.com __ Visit the Archives at http://www.meteorite-list-archives.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] Fake Norway Rock
Hi everyone. I've been a lurker here for some time. By way of introduction, I'm an astronomer with an interest in geology and meteorites. I have met a few of you in person and purchased meteorites for my small collection from some of you. I've also done some hunting here in southern New Mexico. I should probably just keep my keyboard shut, because when I start typing, trouble often follows. :-) But I have been reading this discussion about the Norway video from the beginning, and I feel compelled to support what Chris has said. As Chris said, there was nothing inherent in the video to make it appear to be a hoax. This is what made it interesting and what made it stand out from the hoaxes you see on Youtube. It was far too easy to simply dismiss it without investigating the circumstances and the people involved. Those who did dismiss it should not feel vindicated by the result, for they contributed nothing to it. In fact, the dismissals seen here of the video without first looking into its details were just as wrong as accepting everything on Youtube to be true. If you don't do the work before you come to a conclusion, then it matters not if you are being naive or cynical. If the truth is what you are interested in, there is only one way to know it; you have to do the hard work and investigation *before* coming to a conclusion. Now that others have done that work, and the true nature of the object has likely been exposed, it is not fair for some to claim that they knew all along it was a fake and to suggest that the people who made an effort to understand the video were somehow duped. That's just plain backwards. Greg -- Greg Crinklaw Astronomical Software Developer Cloudcroft, New Mexico skyhound.com __ Visit the Archives at http://www.meteorite-list-archives.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
