Re: [meteorite-list] Chondrule formation mechanism (Info Please)

2006-10-24 Thread lebofsky
Hi Sterling: Derek's book is only $107.50 on Amazon.com. I hope that Derek will be writing an article for the February issue of Meteorite magazine. Larry On Tue, October 24, 2006 11:28 am, Sterling K. Webb wrote: Hi, For those interested in follow-up to Sears' theories but reluctant to

Re: [meteorite-list] Which Arizona SHOW is the biggest and what are the dates for 2007

2006-11-07 Thread lebofsky
Hi Jerry: No. No other meteorite meetings at that time. This just happens to be the time of year that they always hold the Meteoritical Society meeting. It is my understanding, however, that they will have some meteorite displays at the meeting, but I do not know the details. Larry On Tue,

Re: [meteorite-list] OT -- Mercury Transit

2006-11-08 Thread lebofsky
Hi from Tucson where Global Warming seems to be in action. We (Astronomy Department, Planetary Sciences Department, and Flandrau Science Center) had more than 10 telecopes set up (including two 20-inch scopes). We were able to see all but the last five minutes of the event (went behind the

Re: [meteorite-list] LARGE fireball report!

2006-12-19 Thread lebofsky
I beg to differ, it is Gamera who shoots flames as he flies through the Solar System. Larry On Tue, December 19, 2006 4:46 pm, Darren Garrison wrote: On Tue, 19 Dec 2006 16:19:22 -0700, you wrote: That close to Tokyo, I'd suspect Rodan or Mothra g. Rodan? Mothra? Be serious! Those are

Re: [meteorite-list] Comet McNaught Update

2007-01-16 Thread lebofsky
Hi Jeff: My last two emails to the listserv have failed, so this is probably only going to you. Nice pics, even though you have not seen the comet. we saw it the end of last week after sunset (had the neighbors come out wondering what we were doing) and saw it in the middle of the day on Sunday

Re: [meteorite-list] Tired of winter? Not headed for Tucson soon?

2007-01-18 Thread lebofsky
Hi Dave: My last two emails to the list have failed to get through; do not know the problem. If you get this, but not a second copy from the list, please send it on. We had a cold spell earlier this week (lows in the upper 20s), but it has warmed up a bit (may get rain this weekend and I have a

Re: [meteorite-list] SNOW in Tucson! Get ready to be cold. NOT

2007-01-22 Thread lebofsky
Hi From (usually) warm and sunny Tucson. First the good news: It should be lows around 40 F (4 or 5 C) and highs around 70 (20 C) and sunny by the weekend with little chance of rain. That said, here is the webcam picture from the University of Arizona campus. http://www.cs.arizona.edu/camera/

Re: [meteorite-list] Tunguska Video

2007-01-22 Thread lebofsky
Hi All: I sort of remembered something done on the History channel. So I did a Google search and found: http://video.google.com/videoplay?docid=1239210472564794775q=Tunguskahl=en A 5-minute video on Tunguska. In its usual style, despite interviewing several scientists including Don Yeomans,

Re: [meteorite-list] Average size of craters across the solar system?

2007-01-28 Thread lebofsky
Hi Darren: Lots of other factors going on: Extra velocity caused by the gravity of the impacted body. Composition of the surface being hit. Composition/density (and thus mass) of the impactor. Surface processes that will affect the loss of craters or their just fading away. At some point,

Re: [meteorite-list] interesting speculation Pacific 'Basin' origin

2007-01-29 Thread lebofsky
Back in the dark ages (1950s and early 1960s), before the Dawning of the Age of Aquarius (Which really starts somewhere between 2060 and 2100), we were taught (and some of us even taught) that it was interesting how it looked like South America fit into Africa and that the Pacific Ocean basin was

Re: [meteorite-list] Walter Branch

2007-02-02 Thread lebofsky
Dear Sabrina: Our prayers are with you and Walter. Larry Lebofsky (Tucson) On Fri, February 2, 2007 4:58 am, Walter Branch wrote: Hello, I am Walter Branch's wife, Sabrina. On Friday, Walter and our daughter were in an accident. Walter is in critical condition in Trauma ICU. He has

Re: [meteorite-list] Space station moves to avoid debris

2007-02-04 Thread lebofsky
Hi Sterling: I am not a munitions expert, but I think it would be more appropriate to compare the meteoroid with a speeding bullet. The TNT energy is released in all directions while a bullet's (or meteoroid's) energy is directional (at the target). I have seen what the window of the Shuttle

Re: [meteorite-list] Sikhote-Alin Picture of the Day - February 07, 2007

2007-02-07 Thread lebofsky
Hi Tracy: Yes there is! Nangasohu Katsina, Chasing Star or Meteor Katsina According to some Hopi this Katsina represents a planet but to many others it is a meteor that is the Chasing Star. The Katsina wears an enormous head dress of trailing eagle feathers, carries a yucca whip and a bell and

Re: [meteorite-list] www.venusmeteorite.com - what are your opinions on this claim

2007-02-12 Thread lebofsky
Hi Randall and Others: I did some checking. To quote Tim Swindle: Yes, there may be meteorites from Venus, but we have not found them yet! It is much more difficult to get something out of the gravity well of Venus, through the Venus atmosphere, and out of the gravity well of the Sun. It is much

Re: [meteorite-list] www.venusmeteorite.com - what are your opinions on this claim

2007-02-15 Thread lebofsky
Hi Randall: I will try to answer one of your questions. I wish I could give you details on how to get meteorites off of Mars, but this is something that I would have to talk to Jay Melosh about (if I can keep him in place long wnough). However, I can address the issue of asteroid/meteroid

Re: [meteorite-list] Eastern Oregon Meteorite on Ebay

2007-02-19 Thread lebofsky
Hi Al and Edwin, etc. I have in my posession an article by Doug Borgard about Port Orford. The article will be in the May or August issue of Meteorite magazine. Larry On Mon, February 19, 2007 7:50 am, AL Mitterling wrote: Hi Edwin and all, Port Orford. I don't know if you have read any of

Re: [meteorite-list] Peruvian meteorite crater -

2007-02-23 Thread lebofsky
Dear Mccartney: If you plan to go to Peru, please read the following. http://en.wikipedia.org/wiki/Pisco_sour When in Rome ... This is NOT Mexico (or Texas). Larry On Fri, February 23, 2007 2:48 pm, McCartney Taylor wrote: The hunt is on! I just talked to my friend down in South America,

Re: [meteorite-list] OT: Happy Birthday Sputnik...50

2007-10-04 Thread lebofsky
Dirk: 1 light year = 9.46 X 10^15 meters or 9.46 x 10^12 km. So, in 50 years: 4.7 x 10^14 km (470 trillion kilimeters). That is within range of a lot of stars. There are a 100 stars within 7.63 parsecs (almost 25 light years), so if you double the distance, there are about 800 stars (star

Re: [meteorite-list] OT: Happy Birthday Sputnik...50

2007-10-04 Thread lebofsky
Hello Sterling: You need to take the ionosphere into account. If memory serves me, AM radio does not get through, while FM does. TV gets through, too. Hence the images of Hitler at the opening of the Olympics being picked up and re-transmitted in Contact. Or I Love Lucy in an episode of Amazing

[meteorite-list] Fwd: Earth Impacts

2007-10-14 Thread lebofsky
Hello Everyone: I just received this from a colleague of mine and rather give him my best guess, thought it would be best to ask the experts. Don McCarthy is an infrared astronomer an instrument builder who does everything from asteroids and comets, to extrasolar planets, to the origin of the

Re: [meteorite-list] Comet Holmes

2007-10-24 Thread lebofsky
Hello Don: Sounds good to me! We could see all three in the same field of the binocs and then could see it even with the naked eye. Not bad for a nearly full moon! It looked a little reddish and the three of us (Nancy, me, and one of my students) all could convince ourselves that it did not quite

Re: [meteorite-list] comet holmes

2007-10-24 Thread lebofsky
Hello Jerry: Based on Starry Night, the Shuttle was about 360km away at closest and ISS about 390km away. At 300,000 km/sec (speed of light), we are talking about 1/1000 of a second for light to get from there to here. Not sure how far apart they were, but do not think that it was very much

Re: [meteorite-list] comet holmes, Oops

2007-10-24 Thread lebofsky
Too mnay objects running around. 1 AU = 149,600,000 km Comet Holmes = 1.6345 AU from earth this evening (in two days it will be down to 1.630 AU, better duck) This gives a distance of 244,500,000 km Speed of light is 299,800 km/sec So Light Distance = 816 seconds (give or take) Larry On

Re: [meteorite-list] Fw: Comet 17P (Holmes) Visible Event !

2007-10-25 Thread lebofsky
Hi Again: If one were on Mars (hold your breath and bring a warm jacket), Holmes would be 1.17 AU away (vs. 1.63 AU) and 0.7 magnitudes (2 times) brighter than what we see. And there would be less intereference from moonlight! Larry On Wed, October 24, 2007 2:20 pm, mexicodoug wrote: Hi Again

Re: [meteorite-list] Comet 17P (Holmes)

2007-10-25 Thread lebofsky
Hi Don: I am still running 5.X and it works fine. Unfortunately the updates still give it as 17th magnitude. Thanks to Sterling I moved to Mars to see how bright it was (2 times brighter). Larry On Thu, October 25, 2007 4:48 pm, Don Merchant wrote: Hi List. If any of you have Starry Night Pro

Re: [meteorite-list] Holmes [17P]

2007-10-25 Thread lebofsky
Jerry and Mark: Nancy and I just went out and saw it again tonight. It appears brighter than last night and it is clearly much more comet-like than last night. Yesterday it looked just a little not-star-like, but tonight, it is obviously fuzzy with the star-like condensation. It is clearly

Re: [meteorite-list] Holmes [17P], continued

2007-10-25 Thread lebofsky
Hi Again: We just looked at it with a 100mm f/5 telescope and it is clearly orange. However, it is also very obvious that this thing is unusual. I thought that I had a focusing problem, but the scope was in focus. There is a beautiful circular coma, but the condensation is NOT star-like. It is

Re: [meteorite-list] Holmes [17P], continued

2007-10-25 Thread lebofsky
Hi Sterling: It looks more like a planetary nebula to me! I will try to get an estimate of its size tomorrow night when I am at a darker site in Yuma with a bigger scope and maybe a camera. It is always hard to get a real magnitude for a comet since one usually talks about integrated magnitude.

Re: [meteorite-list] Science article on Stardust samples

2007-10-26 Thread lebofsky
Darren: Please thank Anne for the article! :-) It is something that I can use in my class. I would like to meet her some day. Does she go to the Tucson Gem and Mineral Show? Larry On Fri, October 26, 2007 7:15 am, Darren Garrison wrote: On Thu, 25 Oct 2007 22:59:53 -0400, you wrote:

Re: [meteorite-list] Comet Holmes

2007-10-29 Thread lebofsky
Hi All: Another thing against an asteroid impact. If you go to the comet orbit site at JPL for Holmes, because of its inclination relative to the ecliptic, it crosses near Mars and Near Jupiter, not in the middle of the asteroid belt. It passed through the plane of the Solar System back in

Re: [meteorite-list] Comet Holmes

2007-10-29 Thread lebofsky
Hi Again Sterling: Next plane crossing (at 4.8 AU or so) is in 2 years. At that time Jupiter is on the other side of the Sun, so the Trojans, which ar, on average, 60 degrees fore and aft of Jupiter not not even close this time around. So, my bias is a thermal burp (belch). I have seen what an

Re: [meteorite-list] Possible Detection of a Short Tail Behind Comet 17P/Holmes

2007-10-29 Thread lebofsky
For you non-astronomical types: I-filter is 0.9 microns (800 nm) J-filter is 1.25 microns (1250 nm) Visible is about 0.6 microns Larry On Mon, October 29, 2007 5:29 pm, Ron Baalke wrote: POSSIBLE DETECTION OF A SHORT TAIL BEHIND COMET 17/P HOLMES Universite de Montreal October 29, 2007

Re: [meteorite-list] Holmes from Mars

2007-10-30 Thread lebofsky
Hi Don: Starry Night saves the need of a space suit. John Carter, who did not need a space suit, also did not need a computer program to get him to Mars! I still had my try at this running at home with Starry Night 5.x and the major difference is that the comet is in Cassiopeia. Not a large

Re: [meteorite-list] Comet Holmes

2007-11-01 Thread lebofsky
is 3 arc minutes (1/10 of the lunar diameter) from a 7th magnitude star (HIP17476). It really gives you a feel for how thin the material in the coma of Holmes really is! Larry and Nancy Lebofsky __ Meteorite-list mailing list Meteorite-list

Re: [meteorite-list] Did a Collision Cause Comet 17P/Holmes'MysteriousOutburst?

2007-11-08 Thread lebofsky
the collisional possibilities of Comet Holmes passing through the Asteroid Belt, some of them might have noticed that Comet Holmes DOES NOT PASS through the Asteroid Belt! I'm being sarcastic about this because I made exactly the same mistake myself, until an astronomer, List member Larry Lebofsky

Re: [meteorite-list] Did a Collision Cause Comet 17P/Holmes'MysteriousOutburst?

2007-11-09 Thread lebofsky
Hi List: I am trying this again since my previouys forward did not appear to go through. On November 13, this newly-discovered asteroid (only about 20 meters diameter) will pass within 2 Earth radii of the CENTER of the Earth (that is close). It will be 9th magnitude (about 50-100 times too

Re: [meteorite-list] Rosetta gravity assist flyby

2007-11-09 Thread lebofsky
The first announcment was a real one. I do not think that it was at first realized that it was Rosetta! I hope there will be more info in the next few days. Larry On Fri, November 9, 2007 11:35 am, mexicodoug wrote: Someone has a sense of humour, especially the flying couch comment ! So,

Re: [meteorite-list] Leigh Anne DelRay

2007-11-12 Thread lebofsky
Dear Geoff: Our prayers are with Leigh Anne today. Larry and Nancy Lebofsky __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list

Re: [meteorite-list] Rosetta gravity assist flyby

2007-11-12 Thread lebofsky
they are covering the sky in order to locate any asteroids heading toward the Earth. However, Doug, Pluto and the IAU decision is another story that we should discuss over beers sometime. Larry Lebofsky On Mon, November 12, 2007 6:51 pm, mexicodoug wrote: Hi Darren, It certainly was an actual

Re: [meteorite-list] Rosetta gravity assist flyby

2007-11-13 Thread lebofsky
asteroid and shows how well they are covering the sky in order to locate any asteroids heading toward the Earth. However, Doug, Pluto and the IAU decision is another story that we should discuss over beers sometime. Larry Lebofsky On Mon, November 12, 2007 6:51 pm, mexicodoug wrote: Hi

Re: [meteorite-list] Crater 'String' Claim

2007-11-13 Thread lebofsky
Jerry: Ditto Larry On Tue, November 13, 2007 6:25 pm, Sterling K. Webb wrote: Hi, Jerry, List, This site is Johnny Tonto of Pueblo, Colorado. He been much discussed on the List. His craters are largely Craters of the Mind, I think. I ain't convinced, at any rate. Sterling K. Webb

Re: [meteorite-list] Son of Rosetta?

2007-11-16 Thread lebofsky
Rob: I may try to contact the people who observed it and see what they think. This thing is smaller than Rosetta by a bunch (9 meters if 10% albedo). Larry On Fri, November 16, 2007 1:06 am, Rob Matson wrote: Hi Larry and List, Just when the asteroid Rosetta case of mistaken identity was

Re: [meteorite-list] Cruelities

2007-11-19 Thread lebofsky
Hi Sterling: I agree with you completely about distinguishing between old vs. new meteorites from Namibia. I refer you to the excellent article by Ronnie Mckenzie in the August issue of Meteorite magazine where he addresses this particular issue. Larry Lebofsky On Mon, November 19, 2007 7:18

Re: [meteorite-list] Chang's Moon

2007-11-26 Thread lebofsky
There is another version of the story (maybe somewhat rewritten) as a story within a story: The Moon Lady by Amy Tan. It is one of the books we (Nancy) uses in our teacher workshops. In it, it is a magic peach, not a magic pill. Larry On Mon, November 26, 2007 4:52 pm, Darren Garrison wrote:

Re: [meteorite-list] BIG VENUS NEWS

2007-11-29 Thread lebofsky
and dinosaurs a billion yers ago and then wham, along came golbal resurfacing which boiled off the water and decomposed the carbonates! Speculatively, Larry Lebofsky On Thu, November 29, 2007 1:10 am, Sterling K. Webb wrote: Hi, List, ESA had a big (press) conference to release the first

Re: [meteorite-list] Mammoth Stew

2007-12-17 Thread lebofsky
Hi All: I was wanting to find REAL numbers, but may have to rely on memory: 1. The Moon stops very little of what might hit the Earth. The cross section of the Moon is pi x radius(Moon)**2. A sphere at the Moon's distance is 4 x pi x radius(orbit)**2. Since the distance from the Earth to the

Re: [meteorite-list] Mammoth Stew

2007-12-17 Thread lebofsky
Hi Again: I found it! It (the impact cross section) is (I should have realized) incoming velocity dependent. For objects going at 50 km/s the cross sectional area of the Earth is increased by 5%. However, for something approaching at 25 km/s, this increases to 20%! For something going really

Re: [meteorite-list] Phoenix desert fireball

2007-12-17 Thread lebofsky
Wow, that is amazing. History repeating itself. I did a presentation on Thursday on the Geminid meteor shower and when looking up meteors found the following. It is a long link thanks to going to Google, so it might be easier to go to Googe videos, type in meteor shower and it is the first site

Re: [meteorite-list] Phoenix desert fireball: only 87 left!

2007-12-17 Thread lebofsky
Doug: Forgot something. If you watch the newscast, it states the following: A meteor is from an extinct constellation! I wonder which one is missing? Anne, have you ever thought about teaching the media in Denver what a meteor (and meteorite) is? Larry On Mon, December 17, 2007 12:06 pm,

Re: [meteorite-list] Phoenix desert fireball

2007-12-17 Thread lebofsky
Hi Andi: I agree. I sent two emails to the list some time ago and neither seems to have made it (did not like my Google links?). Actually filmed Jan. 4 in Denver. Larry On Mon, December 17, 2007 2:29 pm, Andreas Gren wrote: It looks more like space junk. Andi Hello List, Surprised

Re: [meteorite-list] Mammoth Stew, just right

2007-12-18 Thread lebofsky
Hi all: I am not an expert in this subject, so maybe I should not say anything (but I will anyway). When something just misses the Earth, its orbit will get changed. I would assume similar to Apophis, in 2029, that there is a very small chance that a close approach would lead to an even closer

Re: [meteorite-list] Tunguska-- the movie

2007-12-19 Thread lebofsky
Jerry: SL/9 WAS one object that got too close to Jupiter and was pulled apart by the gravity of Jupiter (probably at the same time it was being captured into an orbit around Jupiter). It also, unfortunately for it, went into an orbit that had perijove (closest point in orbit) INSIDE of Jupiter,

Re: [meteorite-list] Saturn's Rings May be Old Timers

2007-12-19 Thread lebofsky
Hi All: This idea is not new. Don Davis et al. published a similar model more than 20 years ago. It is also interesting how similar the artist concept of the rings in the article is to one done by Bill Hartmann something like 30 years ago. It would be nice if people gave credit where credit was

Re: [meteorite-list] near miss stuff

2007-12-19 Thread lebofsky
Hi Pete: One other possiblity: Capture! Think about SL/9. I suspect that for the Earth/Moon system, this is not a very likely situation. Jupiter is much larger (with greater gravity) and objects passing by Jupiter will be going much slower than they would pass by Earth. Larry On Wed, December

Re: [meteorite-list] Asteroid may be set to slam Mars in Jan.

2007-12-21 Thread lebofsky
Hi Göran: It is all in the timing. If I remember correctly, when orbits are calculated, the greatest uncertainty is in the time of perihelion passage (where it is in its orbit). So, while they know the inclination of the orbit (where it will be when it crosses the orbit of Mars), the greatest

Re: [meteorite-list] ARCTIC IRON, THEORIES, FACTS, AND MATHEMATICAL MODELS

2007-12-27 Thread lebofsky
Hello Sterling: We have a regular Asteroid Lunch here at U Arizona where we sometimes even talk about asteroids and meteorites! Last week, I happened to ask Jay Melosh (who I think originally wrote the LPL program) about the Canyon Diablo impactor (I am reviewing a book for Meteorite magazine).

Re: [meteorite-list] Goodbye 2007 - Hello 2008

2007-12-31 Thread lebofsky
Dear Listees: Happy New Year to all of you and we hope to see many of you in a month here in Tucson at the Gem and Mineral Show! Larry and Nancy Lebofsky On Mon, December 31, 2007 5:32 pm, Notkin wrote: Dear Listees, Friends, and Colleagues Around the World: My father just called from

[meteorite-list] Call for Articles for the May issue of Meteorite magazine

2008-01-05 Thread lebofsky
on February 8. Larry and Nancy Lebofsky Co-Editors, Meteorite magazine __ http://www.meteoritecentral.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list

Re: [meteorite-list] Solar System (A bit off topic)

2008-01-09 Thread lebofsky
Pete: Thanks for this. This is a great visual of objects in the Solar System! Larry On Wed, January 9, 2008 3:47 am, Pete Pete wrote: Good morning/evening, List, (depending what side of the planet you're on) Here's a decent solar system chart I came across, for anyone interested:

Re: [meteorite-list] Simple mapping software? (A little OT)

2008-01-09 Thread lebofsky
Hello Mark: Google Earth can mark the locations with pins, but not sure about coloring countries. Lasrry On Wed, January 9, 2008 10:09 am, Mark Crawford wrote: Hi folks, I'm looking for a (free, ideally) tool to let me map out my colleciton. The kind of thing I'm after is just something

Re: [meteorite-list] When Worlds Collide: Have Astronomers Observed the Aftermath of a Distant Planetary Collision?

2008-01-10 Thread lebofsky
Hi All: Would a short article in Meteorite magazine on this subject be of interest to readers? If so, please let me know and I can contact the authors who I know and are here at the meeting I am at. There may be issues if this is going to be published elsewhere, but it can't hurt for me to ask.

Re: [meteorite-list] Dumb question What about Kuiper object 2001 KX76?

2008-01-11 Thread lebofsky
Hello Michael: 28978 Ixion (2001 KX76) Larry On Fri, January 11, 2008 5:47 pm, Michael Murray wrote: Hi List, With reference to the Kokogiak.com solar system bodies picture that Pete posted back on the 9th, I don't see the Kuiper object 2001 KX76 supposedly to be 1200 to 1400 km diameter in

Re: [meteorite-list] 'The high-pitched scream'?

2008-01-12 Thread lebofsky
Hi all: I just saw a movie on TV the other night. I was at the American Astronomical Society meeting and could not sleep, turned on the TV and there was a movie about meteorites. In it, on a number of occations, you could hear the sound of the incoming meteorite before the hit the ground and

Re: [meteorite-list] Hollywood's getting in on the act

2008-01-13 Thread lebofsky
Jerry: Interesting trailer that they have. Temples in 10,000 BC? I do, however, like how they take Earth at Night and take away the light pollution! Larry On Sat, January 12, 2008 7:24 pm, Jerry wrote: 10,000 BC opens 03/07/08 AD. Were any of you asked to consult? Jerry Flaherty

[meteorite-list] [Fwd: [alllpl] MESSENGER Post Flyby Assessment]

2008-01-15 Thread lebofsky
Hi All: In case your are interested in images from MESSENGER, it appears that the lines are busy, so the spacecraft download is delayed a little. Larry Original Message Subject: [alllpl] MESSENGER Post Flyby Assessment From:Mary

Re: [meteorite-list] Two New Images from MESSENGER's First Flyby of Mercury

2008-01-16 Thread lebofsky
Jerry: Yes, bright rays indicate younger craters. When the crater is created, some of the rock is shock melted, forming a glassy material that we see as the bright ray eminating from the impact site. Larry On Wed, January 16, 2008 7:55 pm, Jerry wrote: Do the bright rays indicate a more recent

Re: [meteorite-list] Two New Images from MESSENGER's First FlybyofMercury

2008-01-17 Thread lebofsky
Hi Again: A little bit more on space weathering (wish I had the time to read up on the latest or at least talk to friends who know more than me on the subject). Over long periods of time, when you remelt the material on a surface, you get very small particles with the iron dispersed within it

Re: [meteorite-list] Latest MESSENGER Images Show Fascinating Views of Mercur...

2008-01-22 Thread lebofsky
Tom: There will be an article by Melinda Hutson on this very subject (meteorite from Mercury) in either the February or May issue of Meteorite. Larry On Tue, January 22, 2008 4:26 pm, [EMAIL PROTECTED] wrote: Hi, Thanks for the post. I had to remember to breath! Dr. Love had said there

Re: [meteorite-list] New guy introduces himself with a couple of questions

2008-01-28 Thread lebofsky
and Nancy Lebofsky, who are on this list. Check online at: http://meteoritemag.uark.edu. This magazine provides a wide variety of information and updates on the latest in the meteorite world. Welcome. Dave --- Michael Gilmer [EMAIL PROTECTED] wrote: Hello Everyone and List Members!, I

[meteorite-list] test, please ignor

2008-01-30 Thread lebofsky
This is a test Larry http://nats102.arizona.edu/gemshow/gemshow.mht __ http://www.meteoritecentral.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list

Re: [meteorite-list] Mercury's crack habit

2008-01-31 Thread lebofsky
on the Moon forming from volcanic eruptions). Good work Sterling! Larry Lebofsky (with an f) PS Sterling: At 4:00 in the morning, had no clue what you meant about Sorry about the w message you sent me. Thought you might have said something about our persident! On Thu, January 31, 2008 1:42 am

Re: [meteorite-list] Mercury's crack habit

2008-01-31 Thread lebofsky
Hello Sterling: Take it one more step. Given the location of the crater within Caloris and given (at least it looks to me) that the channels seem to predate ANY of the other craters (the channels do not deform any craters, but seem to have been there when the craters were formed), how about

Re: [meteorite-list] Tucson update: more images

2008-02-03 Thread lebofsky
Hi All: Here are a few more images from Friday and Saturday. Which include Anne and Geoff setting up (sorry). http://nats102.arizona.edu/Gemshow/GemShow0202.mht Larry On Sat, February 2, 2008 8:42 pm, Bob Evans wrote: I know every one is busy enjoying the show, but, Im sure the rest of us

[meteorite-list] Tucson pictures

2008-02-03 Thread lebofsky
Hello list. Sme people have had problems opening my link. If you email me directly, I can send the images to you directly. Larry On Sun, February 3, 2008 10:33 am, Michael Gilmer wrote: Hi Larry and All! The following link in a previous list post is broken and 404.

[meteorite-list] More Tucson Pictures

2008-02-06 Thread lebofsky
Here are some pictures from Monday and Tuesday. http://nats102.arizona.edu/Gemshow/Gemshow020401.JPG http://nats102.arizona.edu/Gemshow/Gemshow020402.JPG http://nats102.arizona.edu/Gemshow/Gemshow020403.JPG http://nats102.arizona.edu/Gemshow/Gemshow020404.JPG

[meteorite-list] Just a few more Tucson pictures

2008-02-10 Thread lebofsky
Sorry for not posting these sooner (or not taking more). Larry http://nats102.arizona.edu/Gemshow/P1010306.JPG http://nats102.arizona.edu/Gemshow/P1010308.JPG http://nats102.arizona.edu/Gemshow/P1010311.JPG http://nats102.arizona.edu/Gemshow/P1010312.JPG

Re: [meteorite-list] Why doesn't Mars look like Mars?

2008-02-10 Thread lebofsky
Ed: The surface rocks on Mars are weathered. Since much of the original iron did NOT go to the core of Mars, there is lots of iron in the surface rocks which have weathered, turning the iron to iron oxide -- rust. The rocks that make it to Earth from Mars are from below the surface, so have not

Re: [meteorite-list] Call for Articles for the May issue of Meteorite magazine

2008-02-14 Thread lebofsky
for the May issue (had promises from several people) and starting to think about the August issue. Deadline for May is February 28 and for the August issue it is May 19. Hope to hear from you with articles and ideas! Larry and Nancy Lebofsky __ http

Re: [meteorite-list] A welcome to meteorite collecting tutorial

2008-03-05 Thread lebofsky
Hi Pete: As at least one other person has said, please be careful with the definition of bolide. The IAU does not recognize the term (they do not recognize terrestrial or gas giant or Jovian for planets either, but that is a part of another story). However, if you look at the Wikipedia

[meteorite-list] Call for Articles for the August issue of Meteorite magazine

2008-03-25 Thread lebofsky
and interest in the DVD. I hope that you will soon receive your February issue of Meteorite in the mail and that you enjoy it. Larry and Nancy Lebofsky Editors, Meteorite magazine __ http://www.meteoritecentral.com Meteorite-list mailing list Meteorite-list

Re: [meteorite-list] 'Meteoroid Hits the Moon' Article Question

2006-09-30 Thread lebofsky
Hi Mike: Yes, this has to refer to the impact itself since when we normally use the term, it implies something coming through the atmosphere. As Editor, one wishes to be able to fix these things, but since it is just a news item, I tend not to change content. Just remember, too, this is a news

Re: [meteorite-list] First Detailed Pictures of Binary Asteroid Reveal Bizarre System

2006-10-15 Thread lebofsky
Hi Darren: Yes, you are right, but what do you expect from a reporter! However, it you look at the animation (and given that it is a binary), you can see the wobble of the larger mass as it is being pulled upon by the smaller mass and the larger one precesses on its axis (they both precess) due

[meteorite-list] Articles for the next issue of Meteorite magazine

2006-10-16 Thread lebofsky
be worth publishing in Meteorite, please contact me at this email address. We are always looking for new authors and for those of you at universities, we are seeking articles by students, too. Larry Larry and Nancy Lebofsky Editors, Meteorite magazine 1371 E. Placita Mapache Tucson, AZ 85718

Re: [meteorite-list] More Than a Meteor Likely Killed Dinosaurs 65 Million Years Ago

2006-10-17 Thread lebofsky
Ed: Makes sense to me. There was a giant meteor and when all of the dinosaurs looked up at it they were blinded by the light. Made it difficult for them to find food! Larry On Tue, October 17, 2006 4:25 pm, E.P. Grondine wrote: Hi Ron - meteor impact? Didn't any one at NSF catch this?

Re: [meteorite-list] Eris smaller than Pluto?

2010-11-08 Thread lebofsky
Since no one has picked up on this, try 16th and 17th in size (not including the Sun). AA number of satellites, inclouding the Moon, are larger. larry Hi All, Based on observations from Chile on November 6th of the occultation of an unnamed star by the dwarf planet Eris, it appears that the

Re: [meteorite-list] Calculate your own Impact Earth meteor

2010-11-09 Thread lebofsky
Hi Shawn: Do you know if this is updated from the program that is (was?) available at the University of Arizona? Jay Melosh left UA last year to go to Perdue, so it is probably the same program. Larry Hello Listers, I post this cool program a couple weeks ago on the List the Purdue has

Re: [meteorite-list] NASA Announces Comet Encounter News Conference

2010-11-18 Thread lebofsky
Hi All: As far as I know, all we are seeing in the comet images in the jets is dust. If you have fine dust particles and shine light on them, the scattered light will make them stand out like that. One sees the effect in a smokey room (or sports stadium) and I demonstrate this in a classroom by

Re: [meteorite-list] Impact! - Syfy Channel

2010-11-20 Thread lebofsky
I remember this movie from when it was first shown. It is amazing how much bad science there is in it! Actually, it is not an ordinary asteroid that hits the Moon, but I do not want to give the plot away! Or the thrilling ending. Larry The local Syfy channel here (channel 122 Dish Network)

[meteorite-list] Temperature of meteorites

2010-11-22 Thread lebofsky
Hi all: I am in the middle of a workshop on asteroids and meteorites. At the end of the first day, the teachers get to write down questions that they would like answered. During the session, I had said that when they land, meteorites are cold, not burning hot. The question that was asked was how

Re: [meteorite-list] Temperature of meteorites

2010-11-23 Thread lebofsky
Thanks Bernd: This will help a lot! My guess is that warm means warmer than the air temperature, but probably not much warmer than body temperature since even 15 to 20 degrees Centigrade (125 to 135 degrees F) is considered hot. Given that some have been said to be frosty, and one always hears

Re: [meteorite-list] Temperature of meteorites (Bernd's List)

2010-11-23 Thread lebofsky
Hi Mike: I am still a fan of cold meteorites (yes I am biased), so is it possible that a burn is due to something very cold rather than hot? Larry I have a couple to add to Bernd's list. Both were picked up immediately after the fall: 23) Lixna: Two other workers who were harrowing a nearby

Re: [meteorite-list] Cometary meteorites

2010-11-23 Thread lebofsky
Hi: I have said this to you before that there is about zero evidence that carbonaceous chondrites are from comets. There is only minimal evidence that there are hydrated silicates in comets and at least the CI and CM CCs very much aqueously altered and are consistent with an origin from C, B, and

Re: [meteorite-list] sulphurous smell of meteorites (wasTemperature of meteorites)

2010-11-24 Thread lebofsky
Mark: Very good point! As a grad student (long, long, ago in a distant...) I used to work with various frozen gases, including hydrogen sulfide. It turns out to be more dangerous/poisonous than hydrogen cyanide. However, the nose detects the sulfide at much lower levels. The problem is that if

Re: [meteorite-list] New kind of moon rock identified.

2010-12-11 Thread lebofsky
That's what happens when you have a spacecraft-related paper! Larry IDENTIFICATION OF A NEW SPINEL-RICH LUNAR ROCK TYPE BY THE MOON MINERALOGY MAPPER (M3) CM Pieters, J Boardman, B Buratti, R Clark, JP Combe, R Green, JN Goswami6 JW Head III, M Hicks, P Isaacson, R Klima, G Kramer, K

Re: [meteorite-list] Meteorite Magazine

2010-12-13 Thread lebofsky
Hi Dennis: Don't panic! Have you ever heard of the US mail? Also this there is a holiday coming up. When I was editor, there were a few times when I actually knew when an issue left the printers. My impression is that foreign airmail got their copies within a week and US subscribers could be as

Re: [meteorite-list] Meteorite Magazine

2010-12-14 Thread lebofsky
Lebofsky I have only received the first issue, too! Still looking for issue 2!!! John Teague Knoxville, TN -Original Message- From: Leoncio Cividanes Álvarez supeind...@hotmail.com Sent: Dec 14, 2010 2:45 AM To: Meteorite list meteorite-list@meteoritecentral.com Subject: Re: [meteorite

Re: [meteorite-list] Meteorite Magazine

2010-12-14 Thread lebofsky
Lebofsky I have only received the first issue, too! Still looking for issue 2!!! John Teague Knoxville, TN -Original Message- From: Leoncio Cividanes Álvarez supeind...@hotmail.com Sent: Dec 14, 2010 2:45 AM To: Meteorite list meteorite-list@meteoritecentral.com Subject: Re: [meteorite

Re: [meteorite-list] OT: Tucson shooting

2011-01-08 Thread lebofsky
of conduct issues at Pima Community College where she works. Tucson is a big town yet small in many ways. If I hear anything else, I will let the list know, but right now, everyone seems to be getting about the same information. Larry Lebofsky Thoughts and prayers to the victims

Re: [meteorite-list] NASA's Kepler Mission Discovers Its First RockyPlanet

2011-01-10 Thread lebofsky
Note that this new planet has a density of about 8, so not really terrestrial as such, but more a VERY large iron! Larry at the AAS conference This is the top item on a list of Kepler hits waiting to be verified by ground-based telescopes. The list is roughly 700 hits long and we can expect a

Re: [meteorite-list] NASA's Kepler Mission Discovers Its First RockyPlanet

2011-01-10 Thread lebofsky
Hi Everyone: An update. Geoff Marcy gave an invited talk this evening at the meeting I am at (American Astronomical Society). The density of the new planet is 8.8 +/_ 2.5 g/cc (iron meteorites are 7-8). The large uncertainty (not bad given the size of the object) implies that the planet can be

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