Re: [meteorite-list] New Met Bulletin approvals - 29 new stones fromNWA and North America.

[John.L.Cabassi]

Hey Mike
Thanks for keeping us updated on new approvals. Do me a favor? Keep an
eye out for NWA 231 :-)

Cheers

John Cabassi - Johnno
IMCA #2125
www.MeteoriteJunction.com
MeteoriteHQ.Com  (still under construction)
Twitter: @meteoritejohnno
http://facebook.com/MeteoriteJohnno 
 
 
 


-Original Message-
From: meteorite-list-boun...@meteoritecentral.com
[mailto:meteorite-list-boun...@meteoritecentral.com] On Behalf Of
Michael Gilmer
Sent: Thursday, March 08, 2012 1:22 PM
To: meteorite-list@meteoritecentral.com
Subject: [meteorite-list] New Met Bulletin approvals - 29 new stones
fromNWA and North America.


Greetings Bulletin Watchers,

There are 29 new approvals in the Met Bulletin today.  This includes
many OC's from NWA and North America.  There are also a few interesting
types - ureilite, angrite, EL6, etc.

Linkage -
http://www.lpi.usra.edu/meteor/metbull.php?sea=&sfor=names&ants=&falls=&;
valids=&stype=contains&lrec=50&map=ge&browse=&country=All&srt=name&categ
=All&mblist=All&rect=&phot=&snew=1&pnt=Normal%20table&dr=&page=0

Best regards,

MikeG
-- 
---
Galactic Stone & Ironworks - MikeG

Web: http://www.galactic-stone.com
Facebook: http://www.facebook.com/galacticstone
Twitter: http://twitter.com/GalacticStone
RSS: http://www.galactic-stone.com/rss/126516
---
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Re: [meteorite-list] AD: MeteoritesUSA.com Website is for sale

[John Lutzon]

My best to you and your family. Stop in.

John Lutzon

- Original Message - 
From: 
To: 
Sent: Thursday, March 08, 2012 2:25 PM
Subject: [meteorite-list] AD: MeteoritesUSA.com Website is for sale


Dear List,

MeteoritesUSA.com, the website, and domain name is for sale. The site
is TOP 10 for MANY meteorite related keywords in Google, Yahoo, and
Bing search engines. Has built in advertising revenue. It gets about
100,000 visits per year. The sale will include 1 year of website
hosting, transfer of domain name over to buyers account, and transfer
of ownership of the Meteorites USA logo brand. I will help with the
transfer, and coach the buyer on how to operate and manage the site.
The site is highly popular and receives lots of traffic, mostly people
wanting to learn more about meteorites, how to hunt, and where to buy
meteorites. My asking price is "reasonable".

Due to circumstances beyond my control I'm going to have to sell my
beloved website after 5 years of work. There are some family and
personal issues that I must tend to, and I simply do not have to
energy or time any more to work on the site. I will NOT be leaving the
meteorite community. I love meteorites too much for that, but life
happens.

People can still get in touch with me via email at
wichman[at]gmail.com or phone at 928-530-8687

Regards,
Eric Wichman
Meteorites USA
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Re: [meteorite-list] New Met Bulletin approvals - 29 new stones from NWA and North America.

[Chris Spratt]

And not one Canadian in the lot!

Chris. Spratt
Victoria, BC
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[meteorite-list] AD NWA 869 570 gr. lot of slices - end pieces

[M come Meteorite]

 For who are interested I have put a lot of 570.4 grams of slices and end 
pieces not polished of NWA 869 full of nice inclusions, if you are interested 
go here
 
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=260974095865 
 
Matteo 
 
M come Meteorite Meteoriti
i...@mcomemeteorite.it
http://www.mcomemeteorite.it
http://www.mcomemeteorite.eu
Mindat Gallery
http://www.mindat.org/gallery-5018.html
ChinellatoPhoto Servizi Fotografici
http://www.chinellatophoto.com



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Re: [meteorite-list] Speed that meteors enter dark flight?

[MstrEman]

The simple answer is it depends on a lot of changing factors and
broadly ranging bounded assumptions. I can only share some of those
here to show why it is not a an easy answer.



For one of those assumptions, you have to select amongst some drag
coefficients/cross-sections.  Typically: sphere, half sphere, cone and
streamlined.  One might assume that anything tumbling with sharp edges
is really facing high sheer forces and more likely to shear apart.
The drag cross section governs the air dampening of the gravity
acceleration which typically lies between 120-400 miles per hour
terminal velocity. This in itself requires choosing an assumption.

 The formulas in the link require an air density (aka fluid density)
average value as it isn't set up for a changing density which can be
considerable in a steep trajectory. There is a general acceptance that
the air is too thick below 5 miles/8 km above sea level for a meteor
below 1 meter to maintain incandescence velocities. ( 88% of the
atmosphere lies at or below 7 miles)   Air density is increasing at a
dramatically increasing rate.  In some respect so long as it is a deep
penetration to say under 12miles there should be ample distance to
travel to a point of all cosmic velocity being bled off and fall from
gravity acceleration alone. We'll assume a range of 4000-4500 kph for
retardation.

 One has to estimate a mass where total cosmic velocity can be
expended: which can be up to 10 tons/9000kg according to the AMS faq
page. I've also heard up to one meter but if you want to choose a
typical value pick 1kg.

One has to also integrate an acceleration factor as gravity is at work
even during retardation to extinction( note: retardation point is used
in our science but may be a misnomer but I won't get into a crust
argument).

So there is quiet a bit in the way of assumptions and perhaps a lot
more inaccuracy of accepted values.

Since we are in the "I wonder" mode-- lets choose a surrogate
meteorite/oid which has more data:
   Freefall
parachutist records.
"Captain Joseph Kittinger entered the record books when he stepped
from the gondola of a helium balloon floating at an altitude of 31,330
m (102,800 feet) and took the longest skydive in history  He fell for
four minutes and 36 seconds, reaching a maximum speed of 614 miles per
hour (988 km/h before opening his parachute at 18,000 feet (5,500 m)".
   It takes an average sky diver 14±1 to fall one mile. according to a
graphic (pdf) on this page:
  and a skydiver will
fall about 10,000ft. in one minute including the 12 seconds to reach
terminal velocity of 120mph.

All that said it Chris's answer is pretty much within a 3-10 second
limit and impact in under 2 minutes max 95% of the time.

Elton

Sorry for all the co-mingling of metric and SAE values.

On Wed, Mar 7, 2012 at 1:58 PM, Chris Peterson  wrote:
> It depends on the mass of the body. But realistically, under "typical"
> conditions that might lead to meteorite production, I think it's safe to say
> that this happens almost instantly.
>
> For example, a 100 kg stone that survives to 20 km height will be
> experiencing a deceleration of ~1500 m/s^2. A 10 kg stone will experience
> ~4000 m/s^2. Of course, no stone is likely to survive the forces that would
> result without breaking up. You need to play all sorts of games with
> different parameters for mass, speed, and height to find survivable
> scenarios. They all produce a very short period of dark flight before
> terminal velocity.
>
> This is why the retardation point is typically overhead any strewn field,
> and you don't usually have meteorites significantly down field from the
> retardation point. In fact, wind during dark flight may move meteorites
> farther than their last bit of momentum did- and that can be in any
> direction.
>
>
> Chris
>
> ***
> Chris L Peterson
> Cloudbait Observatory
> http://www.cloudbait.com
>
> On 3/7/2012 11:45 AM, Mike Hankey wrote:
>>
>> the follow up to this question/answer I still wonder about is:
>>
>> after dark flight begins, how many seconds will it take to completely
>> decelerate so that all forward momentum is lost after dark flight
>> starts.
>>
>> for example: if the meteor goes dark at 4km/s how many seconds before
>> it will be at 0km/s and/or what does that deceleration curve look
>> like?
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[meteorite-list] AD: MeteoritesUSA.com Website is for sale

[eric]

Dear List,

MeteoritesUSA.com, the website, and domain name is for sale. The site  
is TOP 10 for MANY meteorite related keywords in Google, Yahoo, and  
Bing search engines. Has built in advertising revenue. It gets about  
100,000 visits per year. The sale will include 1 year of website  
hosting, transfer of domain name over to buyers account, and transfer  
of ownership of the Meteorites USA logo brand. I will help with the  
transfer, and coach the buyer on how to operate and manage the site.  
The site is highly popular and receives lots of traffic, mostly people  
wanting to learn more about meteorites, how to hunt, and where to buy  
meteorites. My asking price is "reasonable".


Due to circumstances beyond my control I'm going to have to sell my  
beloved website after 5 years of work. There are some family and  
personal issues that I must tend to, and I simply do not have to  
energy or time any more to work on the site. I will NOT be leaving the  
meteorite community. I love meteorites too much for that, but life  
happens.


People can still get in touch with me via email at  
wichman[at]gmail.com or phone at 928-530-8687


Regards,
Eric Wichman
Meteorites USA
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[meteorite-list] AD 2 meteorite forsale

[steve arnold]

Hi again list.Just an fyi,I sold all my original meteorites I had
forsale. But I have 2 others forsale. I have a 169 gram endcut of a
really nice campo silicated iron which is $100 and a oriented
unclassified stoney for $75 which weighs 26 grams. Pics upon request
and off list please.

-- 
Steve R. Anold, chicago, ill.
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[meteorite-list] MESSENGER Team Delivers Data from First Full Mercury Solar Day to Planetary Data System

[Ron Baalke]

http://messenger.jhuapl.edu/news_room/details.php?id=196

MESSENGER Mission News
March 8, 2012

MESSENGER Team Delivers Data from First Full Mercury Solar Day to
Planetary Data System

Data collected during MESSENGER's third through sixth month in orbit
around Mercury were released to the public today by the Planetary Data
System (PDS), an organization that archives and distributes all of
NASA's planetary mission data. With this release, data are now available
to the public for the first full Mercury solar day of MESSENGER orbital
operations.

Calibrated data from all seven of MESSENGER's science instruments, plus
radio science data from the spacecraft telecommunications system, are
included in this release. The science results have shed light on many
aspects of Mercury, including its global magnetic field, the dynamics of
its exosphere, its surface composition, its geological evolution, and
its interior structure.

The images included in this release provide monochrome views at 250
meters per pixel and eight-color image sets at 1 kilometer per pixel.
Apart from small gaps, many of which have already been filled by
subsequent imaging, these images cover the entire planet under lighting
conditions ideal either for assessing the form of Mercury's surface
features or for determining the color and compositional variations
across the planet.

For more than two decades, NASA has required all of its planetary
missions to archive data in the PDS, an active archive that makes
available well-documented, peer-reviewed data to the research community.
The PDS includes eight university/research center science teams, called
discipline nodes, each of which specializes in a specific area of
planetary data. The contributions from these nodes provide a data-rich
source for scientists, researchers, and developers.

The data for this delivery are archived and available online at
http://pds.nasa.gov/subscription_service/SS-20120308.html, and all of
the MESSENGER data archived at the PDS thus far are available at
http://pds.nasa.gov. As of this release, MESSENGER will have delivered
1.7 terabytes of raw and calibrated data to the PDS, including more than
62,355 images (of which 49,275 are from orbit). The team will submit
four more PDS deliveries at six-month intervals from MESSENGER's primary
orbital mission and its extended mission.

The MESSENGER team has created a software tool with which the public can
view data from this delivery. ACT-REACT-QuickMap provides an interactive
Web interface to MESSENGER data. Developed by Applied Coherent
Technology Corporation, the software allows users to examine global
mosaics constructed with high-resolution images from this and previous
PDS deliveries.

The tool also provides weekly updates of coverage for surface-observing
instruments, as well as the status of specially targeted MDIS
observations. Information is also available that can be used to locate
MESSENGER data products at the PDS. QuickMap can be accessed via links
on each of the MESSENGER websites at http://messenger.jhuapl.edu/ and
http://www.nasa.gov/messenger. The MDIS mosaics can be downloaded from
http://messenger.jhuapl.edu/the_mission/mosaics.html. 

"This latest release marks another important milestone in the sharing of
MESSENGER data with planetary scientists and the public," adds MESSENGER
Principal Investigator Sean Solomon, of the Carnegie Institution of
Washington. "Mercury has presented us with many mysteries to date, and
solving those mysteries will take new ideas and new analyses from
throughout the scientific community."

MESSENGER (MErcury Surface, Space ENvironment, GEochemistry, and
Ranging) is a NASA-sponsored scientific investigation of the planet
Mercury and the first space mission designed to orbit the planet closest
to the Sun. The MESSENGER spacecraft launched on August 3, 2004, and
after flybys of Earth, Venus, and Mercury will start a yearlong study of
its target planet in March 2011. Dr. Sean C. Solomon, of the Carnegie
Institution of Washington, leads the mission as Principal Investigator.
The Johns Hopkins University Applied Physics Laboratory built and operates
the MESSENGER spacecraft and manages this Discovery-class mission for NASA.
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[meteorite-list] AD Few items for sale

[Warren Sansoucie]

Hello List - 


I have a few Campo individuals and a nice 1 pound Canyon Diablo individual for 
sale.

If anyone is interested, please email me for pics and prices.

warren3...@hotmail.com

Thanks!

Warren Sansoucie
IMCA 3174 
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Re: [meteorite-list] Man claims to find meteor

[Thomas Randall]

 
 Oh I agree as well. I was just sending a link to the story to the list. 

Tom

On Mar 8, 2012, at 4:25 PM, Guenther wrote:

> I agree with Rob,

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Re: [meteorite-list] Man claims to find meteor

[Guenther]

I agree with Rob,

I immediately thought that someone probably emptied a barbeque grill and
those are lava rocks. A relative of mine witnessed an extremely bright fall
last year and she swore that she saw it fall beside the road in a field.
After getting the news reports, it turned out that it fell several hundred
miles away. The impact is always further away than the witness thinks. So,
it would be extremely unlikely if he had actually found it where he thought
it fell.

Abe Guenther
 

-Original Message-
From: meteorite-list-boun...@meteoritecentral.com
[mailto:meteorite-list-boun...@meteoritecentral.com] On Behalf Of Matson,
Robert D.
Sent: Thursday, March 08, 2012 3:40 PM
To: Thomas Randall; meteorite-list@meteoritecentral.com
Subject: Re: [meteorite-list] Man claims to find meteor

Hi Thomas,

This fall could not have occurred anywhere near Exeter, so whatever he
found, they aren't meteorites from that fall. I suspect they aren't
meteorites at all.  --Rob

-Original Message-
From: meteorite-list-boun...@meteoritecentral.com
[mailto:meteorite-list-boun...@meteoritecentral.com] On Behalf Of Thomas
Randall
Sent: Thursday, March 08, 2012 12:37 PM
To: meteorite-list@meteoritecentral.com
Subject: [meteorite-list] Man claims to find meteor

CNN

http://bit.ly/zs05kg

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[meteorite-list] New Met Bulletin approvals - 29 new stones from NWA and North America.

[Michael Gilmer]

Greetings Bulletin Watchers,

There are 29 new approvals in the Met Bulletin today.  This includes
many OC's from NWA and North America.  There are also a few
interesting types - ureilite, angrite, EL6, etc.

Linkage - 
http://www.lpi.usra.edu/meteor/metbull.php?sea=&sfor=names&ants=&falls=&valids=&stype=contains&lrec=50&map=ge&browse=&country=All&srt=name&categ=All&mblist=All&rect=&phot=&snew=1&pnt=Normal%20table&dr=&page=0

Best regards,

MikeG
-- 
---
Galactic Stone & Ironworks - MikeG

Web: http://www.galactic-stone.com
Facebook: http://www.facebook.com/galacticstone
Twitter: http://twitter.com/GalacticStone
RSS: http://www.galactic-stone.com/rss/126516
---
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[meteorite-list] NASA Probes Shifting Orbits for Curiosity Rover Landing

[Ron Baalke]

http://www.spaceflightnow.com/news/n1203/06marsorbiters/

NASA probes shifting orbits for Curiosity rover landing
BY STEPHEN CLARK 
SPACEFLIGHT NOW
March 6, 2012

Two NASA spacecraft circling Mars have begun repositioning their orbits
to provide engineering insight into the landing of the Curiosity rover
on the red planet in August, supplying engineers on Earth with vital
data during the robot's dramatic rocket-assisted touchdown.
 
Engineers are shifting the orbits of the Mars Reconnaissance Orbiter and
Odyssey probes, ensuring they have line-of-sight communications with
Curiosity as it lands at Gale crater, a 96-mile-wide impact site adorned
with rugged rock formations and a colossal central peak.

Landing is scheduled for early Aug. 6, U.S. Eastern time.

"Odyssey and MRO have begun positioning their orbits so that they will
be overflying [the Mars Science Laboratory] during entry, descent and
landing," said Fuk Li, director of Mars exploration at the Jet
Propulsion Laboratory in Pasadena, Calif.

Without MRO and Odyssey, controllers would lose crucial information on
how the $2.5 billion mission performs as it plunges through the Martian
atmosphere at hypersonic speeds, deploys parachutes, fires a rocket back
and lowers the six-wheeled rover to the surface on a bridle.

NASA has never tried such a landing system before, and if it works, it
will allow the space agency to place much larger, and heavier, payloads
on Mars. Live insight into the landing will yield crucial information on
how the system works, and would give NASA reams of data in the event of
a mishap or failure.
 
The Odyssey spacecraft, which has orbited Mars since late 2001, will be
the primary means of monitoring Curiosity's progress during landing.
Odyssey will be in view of both Curiosity and Earth, so the orbiter will
offer bent-pipe communications, receiving transmissions from the rover
and relaying them directly to Earth.

Traveling at the speed of light, the signals will reach Earth several
minutes later.

The rover carries its own X-band direct-to-Earth transmitter, but it
only provides a communications rate of about 1 bit per second, just
enough to send status tones back to mission control at JPL.

"It will only tell us roughly what it is doing," Li said.

With Odyssey, engineers will receive a stream of data at 8,000 bits per
second.

After losing the Mars Polar Lander mission on descent to the red planet
in 1999, NASA began requiring live communications with probes heading
for the Martian surface, according to the space agency. NASA received no
data from MPL during landing, challenging an engineering investigation
tasked with finding a cause of the failure.
 
Launched in 2005, MRO will collect data from Curiosity and play it back
to Earth about an hour after landing.

The European Space Agency's Mars Express spacecraft will also listen to
Curiosity during the landing, giving NASA four methods of obtaining
information on how the lander performed.

"Spacecraft all around Mars will be listening as we enter that day," Li
said.

Odyssey also provided real-time bent-pipe communications from NASA's
Phoenix lander when it touched down on the northern polar plains of Mars
in 2008.

The Spirit and Opportunity rovers, which arrived at Mars in 2004, only
communicated with a direct-to-Earth transmitter.

The Mars orbiter fleet will also be essential during Curiosity's science
operations. Odyssey and MRO will relay commands to the rover and
research data, imagery and health information back to Earth.

"For MSL, they are instrumental to make it work," Li said. "Without
them, MSL's operation would probably slow down by a factor of ten."

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Re: [meteorite-list] Campos Sales stone, chondrite, L5, W0 Campos Sales, Ceara, Brazil Fall: January 31, 1991, 10:00 pm local time

[The Murrays]

Looks like a great example of a well sculpted trailing side.  Nice  
stone.

Mike in CO
On Mar 8, 2012, at 8:17 AM, ROCKS FROM SPACE wrote:


http://www.rocksfromspace.org/campos-sales.html
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[meteorite-list] Angry Birds Space

[Ron Baalke]

March 8, 2012

Bob Jacobs / Joshua Buck 
Headquarters, Washington  
202-358-1600 / 1100 
bob.jac...@nasa.gov / jb...@nasa.gov 

Sini Matikainen 
Rovio Entertainment, Espoo, Finland 
+358400214526 
me...@rovio.com 

RELEASE: 12-076

THE EPIC STUGGLE BETWEEN BIRDS AND PIGS MOVES TO SPACE WITH A NASA SCIENCE TWIST

WASHINGTON -- For nearly three years, millions of gamers have used 
physics in the battle between birds and pigs in the video game Angry 
Birds. In cooperation with NASA, Finland-based Rovio Entertainment, 
creator of the Angry Birds franchise, announced its newest game, 
"Angry Birds Space," on Thursday, March 8. NASA and Rovio are working 
together to teach people about physics and space exploration through 
the internationally successful puzzle game. 

Game developers have incorporated concepts of human space exploration 
into the new game. From the weightlessness of space to the gravity 
wells of nearby planets, players use physics as they explore the 
various levels of the game set both on planets and in microgravity. 

"This collaboration began with a simple Twitter exchange about birds 
and pigs in space, and it has grown into a tremendous outreach and 
education opportunity," said David Weaver, associate administrator 
for communications at NASA Headquarters in Washington. "Games are fun 
and entertaining, but they also can be inspirational and informative. 
This ongoing collaboration with Rovio and Angry Birds is an exciting 
way to get people engaged with NASA's missions of exploration and 
discovery, and get students energized about future careers in science 
and technology." 

Aboard the International Space Station, Flight Engineer Don Pettit of 
NASA created a video using Angry Birds Space to explain how physics 
works in space, including demonstrating trajectories in microgravity 
by catapulting an Angry Bird through the space station. The video was 
shown this week to an audience at the South by Southwest Conferences 
and Festivals, an annual convention of original music, independent 
films, and emerging technologies in Austin, Texas. It is also 
available on NASA's website at http://www.nasa.gov. 

"We focused on every detail in development of Angry Birds Space to 
build a special experience for our fans," said Peter Vesterbacka, 
chief marketing officer and mighty eagle of Rovio Entertainment. "I 
believe we have succeeded well with the game, and we wanted to create 
something as unique around our launch events. NASA has been the 
perfect partner for our Angry Birds Space program, and we can't wait 
to work with them on creating more compelling educational 
experiences." 

For more information on microgravity, visit: 

http://www.nasa.gov/microgravity 

For more information about the International Space Station, visit: 

http://www.nasa.gov/station 

For more information about Angry Birds Space, visit: 

http://www.angrybirds.com/space 

-end-

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[meteorite-list] Mars and the Mojave Festival

[Ron Baalke]

http://www.seti.org/mars-mojave-festival-2012

Join us for the First Ever Mars and the Mojave Festival
SETI Institute

We are proud to announce the first ever Death Valley National Park
planetary analog festival, titled Mars and the Mojave Festival -
exploring extremes on Earth and beyond.  This pioneer three-day public
event, scheduled for March 9-11, 2012 will feature scientist- and NPS
interpreter-guided field trips to analog sites, evening keynote speakers
and panels, star-gazing, and an al fresco expo with representatives from
NASA, JPL, non-profits, and universities - including Curiosity
mini-rover demonstrations.

The goal of this event is to elevate public awareness about planetary
analog research taking place on Earth, and its associated missions in
space. Organizations conducting work in the field have an opportunity to
raise the profile of their projects in the public eye.  Death Valley
National Park boasts several planetary analog research sites within its
boundaries and is excited share with its visitors this little known, but
extremely important, use of our public lands.  If this event proves
successful, it could turn into an annual festival celebrating planetary
analogs at different National Park sites throughout the west.

Mars and the Mojave Organizing Committee

Lora Bleacher, NASA Goddard
Rosalba Bonaccorsi, NASA Ames/SETI Institute
Liza Coe, NASA Ames
Stephanie Kyriazis, Death Valley National Park
Andrea Jones, NASA Goddard

JOIN US THIS March 9 - 11, 2012 in for the FIRST EVER MARS AND MOJAVE
FESTIVAL at Death Valley National Park


The barren landscape, almost devoid of vegetation, evokes the red
planet's surface. The arid, but not completely rainless climate is
similar to conditions on an early Mars, about three billion years ago.
Other-worldly features like Badwater salt flat and Ubehebe Crater embody
the extreme environments in which scientists seek the building blocks of
life on other planets.

For these reasons and others, scientists from NASA and universities have
flocked to Death Valley for decades, testing equipment and hypotheses
bound for rocky spheres beyond our earthly home. In other words, Death
Valley is an ideal planetary analog site - a place on earth that mimics
the conditions of places like Mars.

Now, scientists are partnering with the park to celebrate this long
history of planetary analog research during a three-day, free public
festival titled Mars and the Mojave: Exploring extremes on Earth and
beyond, scheduled for March 9-11, 2012. The program kicks off Friday
night, with a keynote address, titled "Curiosity on Mars," delivered by
Dr. Chris McKay from NASA Ames Research Center, a member of the Mars
Science Laboratory team. The talk will be followed by telescope viewing
of Mars, Jupiter, and other astronomical objects.

The Mars Science Laboratory is a NASA mission that successfully launched
on November 26, 2011. A suite of instruments, mounted on a rover named
Curiosity, will help determine if Mars can currently sustain, or has
ever supported, any life sometime during its wetter and warmer past
microscopic life. The rover is scheduled to land on the red planet in
August of this year. Several of Curiosity's instruments and experiments
were designed by scientists who have worked in Death Valley, and will be
participating in the festival.

Visitors to Death Valley National Park during the festival will enjoy
scientist-hosted field trips to analog sites like the rocky Mars Hill,
Badwater salt flat, and the Ubehebe cratered field. Saturday afternoon,
there will be an expo on the lawn of the park's newly renovated Visitor
Center, featuring booths from various NASA centers, universities, and no
profit-organizations dedicated to planetary research and public lands.
Other expo features include mini-Curiosity rover demonstrations,
scientist talks, and free souvenirs. After-lunch lectures and an evening
panel will provide the public with more in-depth perspectives on
planetary analog research in National Parks and around the globe, as
well as a discussion about the societal relevance of space science. The
festival will end on Sunday afternoon with a closing ceremony, featuring
a talk on the future of planetary exploration, on earth and beyond.


WHEN: March 9 - 11, 2012
WHERE:Death Valley National Park

*CONTACTS*:

Stephanie Kyriazis
Education Specialist
Death Valley National Park
stephanie_kyria...@nps.gov
760-786-3226

Rosalba Bonaccorsi
Ph.D Research Scientist
NASA Ames Research Center/SETI Institute
Space Science& Astrobiology Division
M.S. 245-3, Rm. 213A
Moffett Field, CA 94035
rosalba.bonaccors...@nasa.gov
Phone: 650 604-1136
Fax: 650 604-4497

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[meteorite-list] Campos Sales stone, chondrite, L5, W0 Campos Sales, Ceara, Brazil Fall: January 31, 1991, 10:00 pm local time

[ROCKS FROM SPACE]

http://www.rocksfromspace.org/campos-sales.html
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Re: [meteorite-list] Speed that meteors enter dark flight?

[Chris Peterson]

There are a number of papers out there which address modeling meteor 
flight, both during ablation and dark phases. In fact, you can produce a 
reasonably good estimate with nothing more than some basic physics and 
an Excel spreadsheet. For more accurate analysis, you need to implement 
a good numerical integrator and incorporate an ablation/fragmentation 
model. Dark flight modeling is fairly straightforward, but depends on 
accurate high altitude wind data, which may or may not be available, 
depending on the time and location of the event you are studying.


Chris

***
Chris L Peterson
Cloudbait Observatory
http://www.cloudbait.com

On 3/7/2012 11:55 AM, Graham Ensor wrote:

Thanks Chris...that gives me something to work with...It's one of
those questions I've wanted answering for a while now. Will be
interesting to see any advice on calculating the trajectory curve from
this?

Cheers,

Graham


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[meteorite-list] (sans objet)

[Ali Akebli]

Télécharger Ali001.jpg (125,2 Ko)
Télécharger
Télécharger Ali002.jpg (144,7 Ko)
Télécharger
Télécharger Ali003.jpg (62,7 Ko)
Télécharger
Télécharger Ali004.jpg (69,6 Ko)
Télécharger
Télécharger Ali005.jpg (78,0 Ko)
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[meteorite-list] Meteorite Picture of the Day

[valparint]

Sikhote Alin

http://www.tucsonmeteorites.com/mpod.asp
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