Slashdot Mirror


Rare Water-Rich Mars Meteorite Discovered

astroengine writes "A rare Martian meteorite recently found in Morocco contains minerals with 10 times more water than previously discovered Mars meteorites, a finding that raises new questions about when and how long the planet most like Earth in the solar system had conditions suitable for life. The meteorite, known as Northwest Africa (NWA) 7034, is the second-oldest of 110 named stones originating from Mars that have been retrieved on Earth. Purchased from a Moroccan meteorite dealer in 2011, the black, baseball-sized stone, which weighs less than 1 pound, is 2.1 billion years old, meaning it formed during what is known as the early Amazonian era in Mars' geologic history. 'It's from a time on Mars that we actually don't know much about,' geologist Carl Agee, with the University of New Mexico in Albuquerque, told Discovery News."

71 comments

  1. Ironic by Anonymous Coward · · Score: 0, Troll

    We spend billions on probes, and get more information from looking at a rock in Africa.

    Nice work NASA.

    1. Re:Ironic by Anonymous Coward · · Score: 3, Informative

      Firstly, we probe for much much more than just water.
      Secondly, we don't get more information from looking at a rock in Africa. We get some information, and it's different from the information we get from Mars itself.
      Thirdly, this is from very early Mars history. It's very different to current Mars.

    2. Re:Ironic by Anonymous Coward · · Score: 0, Insightful

      How can you be different "to" something? Aren't you different *from* something?

    3. Re:Ironic by mbone · · Score: 4, Informative

      Without the money spent on probes (and, in particular, without the Apollo Lunar samples and the Viking Mars descent mass spectrometer), we wouldn't know that this was a Martian rock.

    4. Re:Ironic by tyrione · · Score: 4, Funny

      We spend billions on probes, and get more information from looking at a rock in Africa.

      Nice work NASA.

      I imagine if we probed your ass we'd discover a passaage all the way across the Milky Way, perhaps?

    5. Re:Ironic by fahrbot-bot · · Score: 4, Funny

      We spend billions on probes, and get more information from looking at a rock in Africa.

      Nice work NASA.

      I imagine if we probed your ass we'd discover a pasaage all the way across the Milky Way, perhaps?

      Or at least to Uranus.

      --
      It must have been something you assimilated. . . .
    6. Re:Ironic by NSN+A392-99-964-5927 · · Score: 0, Troll

      We spend billions on probes, and get more information from looking at a rock in Africa.

      Nice work NASA.

      Why vote the parent as a troll? He was just stating the obvious and pissed on someone's bonfire. Get over it!

      Watch this, I will now be called troll!

      --
      All cows eat grass!
    7. Re:Ironic by wonkey_monkey · · Score: 3, Funny
      Because it would closer to the truth to say this:

      We spend billions on probes, and get some complementary information from looking at a rock in Africa.

      It's a bit like asking why we sent the Viking landers when we can see it's red from here.

      --
      systemd is Roko's Basilisk.
    8. Re:Ironic by Squidlips · · Score: 1

      The Pork is in Houston with their manned missions, not JPL in California that does the unmanned missions. Houston is now building a Pork-extravaganza called the Space Launch System (SLS)--called "The Rocket to Nowhere" because it has no mission except to create income for aerospace execs in Houston.

    9. Re:Ironic by Anonymous Coward · · Score: 0

      We build the Internet. And look what asshats turn it into. Nice work, humanity.

    10. Re:Ironic by Anonymous Coward · · Score: 0

      or it could be M'ars

  2. Re:Curiosity cost $2B USD by Anonymous Coward · · Score: 1

    And to think we could have invested that entire $2b USD in one of our $multi-trillion USD wars, instead of squandering it on mere "science".

  3. Re:Curiosity cost $2B USD by Andy+Prough · · Score: 2

    Or more super computers for New Mexico. Apparently they don't have nearly enough of them.

  4. weee hooo by sgt+scrub · · Score: 4, Funny

    I'm put'n the trailer back on the rocket. It's time to colomonize me some mars!

    --
    Having to work for a living is the root of all evil.
    1. Re:weee hooo by davester666 · · Score: 1

      Crash it into the southern US. They need the water.

      --
      Sleep your way to a whiter smile...date a dentist!
  5. So by NobleSavage · · Score: 2

    How does someone become a meteorite dealer?

    1. Re:So by mbone · · Score: 2

      How does someone become a meteorite dealer?

      Go out in the desert and find some meteorites. Or, get to be a good friend with someone who does.

    2. Re:So by 14erCleaner · · Score: 3, Informative

      There's a good recent book about the history of meteorite collecting (and dealing), if you're really interested. The Fallen Sky by Christopher Cokinos. He chronicles the activities of a couple of very active meteorite dealers of the 20th century - they would mostly rush to the sites of recent falls and look around or buy pieces from local people who find them.

      --
      Have you read my blog lately?
    3. Re:So by Tablizer · · Score: 1

      How does someone become a meteorite dealer?

      Hang out with dinosaurs

    4. Re:So by tehcyder · · Score: 1

      There's a good recent book about the history of meteorite collecting (and dealing), if you're really interested. The Fallen Sky by Christopher Cokinos. He chronicles the activities of a couple of very active meteorite dealers of the 20th century - they would mostly rush to the sites of recent falls and look around or buy pieces from local people who find them.

      That sounds about as interesting as a history of the now legendary Keswick Pencil Museum.

      --
      To have a right to do a thing is not at all the same as to be right in doing it
    5. Re:So by K.+S.+Kyosuke · · Score: 1

      It helps having friends on the meteorite exchange.

      --
      Ezekiel 23:20
  6. Check it out! by Anonymous Coward · · Score: 0

    There are TEN water molecules in this one, guys!

    1. Re:Check it out! by Anonymous Coward · · Score: 0

      That's lame: mine goes to 11.

  7. Re:Curiosity cost $2B USD by 2.7182 · · Score: 1

    But we could have given it to condensed matter physics research, which gets way less than NASA, or other branches of physics, such as particle physics, yet has numerous applications, while still contributing to our fundamental understanding of the world, through applications of quantum field theory and statistical mechanics.

  8. NWA by AnderMoney · · Score: 3, Funny

    Does anyone else think they could have picked a better acronym for Africa than NWA?

    1. Re:NWA by wonkey_monkey · · Score: 1

      Northwest Africa (NWA)

      Africa's pretty big. It helps to divide it up.

      --
      systemd is Roko's Basilisk.
    2. Re:NWA by Anonymous Coward · · Score: 0

      NWA is the acronym for the influential hiphop group, Niggaz Wit Attitudes

    3. Re:NWA by crypticedge · · Score: 2

      And had been the geographic designation for North West Africa for far longer. Just because a hip hop group couldn't come up with their own acronym doesn't mean it's wrong to use it in a setting it had already been in use for generations.

    4. Re:NWA by Anonymous Coward · · Score: 0

      The GP was clearly a joke man.

    5. Re:NWA by toddestan · · Score: 1

      I'm pretty sure the group was named after the airline anyway.

  9. On a geochemical basis by Anonymous Coward · · Score: 0

    It's not from Mars !

    XD

  10. Venus, not Mars. by Anonymous Coward · · Score: 0

    "a finding that raises new questions about when and how long the planet most like Earth in the solar system had conditions suitable for life"

    Venus is Earth's twin. Mars is like mini-me.

    1. Re:Venus, not Mars. by onemorechip · · Score: 1

      Sigh. Venus gets no love. Ironic, isn't it?

      --
      But, I wanted socialized health insurance!
  11. Some questions by Celarent+Darii · · Score: 2, Interesting

    The article is very short on explanations. For instance:

    1/ When they say 'Martian meteorite' do they mean that it actually came from the surface of mars or rather than it's general origin was near to the orbit of mars?
    2/ What guarantees are there that this rock is actually from mars?
    3/ If so, how can you explain the parent meteor escaping the gravity well of mars? If this piece of rock is about a kilogram, then its entry mass must have been be quite large. The meteorite in California that was tracked with radar (the Sutton Mill's meteorite in 2008) and later collected had an estimated mass of 40,000 kg but only about 1 kg was recoverable from pieces much smaller than the one in the story.
    4/ Following this, it would seem an improbable event that a/ there would be some impact on mars that would send ejecta as large as 40000 kg out of mars orbit and that b/ this orbit would be towards the earth. Any impact that could send ejecta into escape velocity would almost have to be tangential to the surface, and even then it is difficult to see how such an impact could even produce large ejecta as the impact would skim more across the surface rather than into the interior of the planet.
    5/ usually dating of the material and its mineral composition leads to a supposition that it is of planetary origin. And yet this rock has a different material composition than martian rocks, as per the article. Thus it seems that the entire hypothesis that it came from mars should actually be questioned instead of inferring that mars had more water than because of the composition of this meteorite.

    Just how can they actually prove that the rock came from mars? It seems Occam's razor needs some sharpening.

    I remember not long ago that they were saying that the Corvid meteoroids were ejecta from the Giordano Bruno impact. This was proven false: http://adsabs.harvard.edu/abs/1993JGR....98.9145H

    1. Re:Some questions by Anonymous Coward · · Score: 1

      Why would the article address any of those questions? That's like talking about solar flares and expecting an explanation of how hydrogen fuses into helium. Google methods for determining meteorite origins if you want to know.

    2. Re:Some questions by Anonymous Coward · · Score: 0

      To disprove something you just need to find one flaw. If you seriously doubt that this rock comes from Mars then just state the most serious flaw and we'll discuss that. Don't spread your disbelief like butter, it makes it thin everywhere.

    3. Re:Some questions by DerekLyons · · Score: 3, Informative

      Funny that you can find a link to something that implies the claim is false... but that you can't be bothered to google on "martian meteorite"... and if you did do so, you'd see one of the related searches is "how do martian meteorites get to earth".

      Skepticism is useful, but get off your dead ass and be an informed skeptic rather than an ignoramus.

    4. Re:Some questions by Celarent+Darii · · Score: 1

      Well I do happen to know something of the topic, but thank you for your snide remarks. "Look it up" is the classic defense of a sectarian, not a scientist.

      Quoting from an article you can read here : http://arxiv.org/pdf/astro-ph/0204346.pdf

      [page 4]

      "Two major mechanisms of impact-related meteorite ejection from Mars have been proposed: (1) acceleration of fragments by a shock wave in the solid rock... and (2) acceleration of fragments by the gas produced in a strong impact (which can be oblique).

      One should bear in mind that the initial size of the body determined by the time of exposure of its fragments to cosmic rays should be 15 m. Another limitation consists in that the mass of the impact-created lunar meteorites should be 2500 times that of the Martian ones and the mass of the latter, reach ~10^14 kg. In actual fact, of the SNC meteorites exceeds by a factor ~40 that of lunar ones. Taking into account the crystallization age (1.3 Gyr), it becomes very difficult to satisfy all these requirements for the case of Mars, since they call for ejection from a comparitively young (~200 Myr old) crater of diameter D=150-200 km. Such craters do not appear to exist on Mars, and there is no certainty in the presence of sufficiently young craters with D=100-150 km."

      tl;dr : it is not at all certain that the SNC meteors came from Mars as there are phenomena that do not support this thesis. Another thesis is that they came from earth ejecta, and the observed data actually fits this model very well.

    5. Re:Some questions by DerekLyons · · Score: 1

      Well I do happen to know something of the topic

      From the questions you asked, that's not immediately obvious. In fact, from the questions you asked you appeared to be completely ignorant of the topic.
       

      "Look it up" is the classic defense of a sectarian, not a scientist.

      Had I been defending something, you'd have a point. What I was doing was answering your questions - something to which "here's the relevant links" is a completely valid answer. But it looks like you're not interested in answers.
       

      . Taking into account the crystallization age (1.3 Gyr), it becomes very difficult to satisfy all these requirements for the case of Mars

      Anyone actually familiar with science knows that difficult is not a synonym for impossible. - even though ignorant jackasses try mightily to make it so.
       

      tl;dr : it is not at all certain that the SNC meteors came from Mars as there are phenomena that do not support this thesis. Another thesis is that they came from earth ejecta, and the observed data actually fits this model very well.

      tl;dr transation: "It's completely certain that I (Celarent) am an ignorant jackass who is highly selective about what I'll read and believe".
       

      thank you for your snide remarks

      Not a problem - you deserved them in spades for ignorance above and beyond the call.

    6. Re:Some questions by Agent+ME · · Score: 1

      Nah, I think it would be more like talking about meteorites from Mars and explaining whether the meteorite was from Mars.

    7. Re:Some questions by Anonymous Coward · · Score: 0

      Been up all night drinking?

    8. Re:Some questions by Celarent+Darii · · Score: 1

      The questions I proposed were not completely without foundation, and you noticed that I actually quoted an article. If you search Google you will get mostly fluff reponses like the article with no real arguments on the dynamic mechanisms that allow us to state that this particular rock actually came from Mars. The links you gave were not answers but just magical hand-waving: "look it up on Google, here are links" . Those links don't answer the objections.

      The only real argument that can establish the non-earth origin is the material composition of the rocks. And yet now we see that their material composition is not like the mars that we have actually measured thanks to the NASA probes. But the article now claims that we must posit the hypothesis that Mars was somehow different in the past because of this ONE specimen. Actually it should be the other way around - we should question the hypothesis that this rock actually came from Mars. Similarly when they announced micro-fossils in a SNC meteorite, the burden of proof must lay on the argument of their Martian origin, which is hardly self-evident. Just saying that it is possible they came from Mars is not sufficient.

      The only really convincing argument that SNC meteors are from Mars are the isotopic ratios of Oxygen present in the rocks. And yet this ratio can be explained by other mechanisms as quoted in the second article, if you would actually read it to the end.

      As to the rest, the only reason I bother to post on Slashdot is for the discussion. I suppose Slashdot has simply lost its ability to question and reason scientifically. As a news source there are many others and better, but it was the ability to question and discuss the news that gave Slashdot value. But I guess that value is no longer to be found here.

      So don't worry much, no need for me to come here and waste your time. Have fun with Google and whatever they want you to find, and please try not to think too much.

  12. Two questions... by LongearedBat · · Score: 1

    1. How do we know that a rock is from Mars, especially when its composition is different from what we've found on Mars to date.

    2. How do rocks leave Mars' gravity well in the first place? Are they shrapnel from Mars being hit by big meteorites?

    1. Re:Two questions... by mbone · · Score: 5, Informative

      1. How do we know that a rock is from Mars, especially when its composition is different from what we've found on Mars to date.

      Isotope ratios and certain element ratios. These depend on the history of a planetary body, and you can rule out every planet / asteroid but Mars. I always liked the conclusion in this paper :

      There seems little likelihood that the SNCs are not from Mars. If they were from another planetary body, it would have to be substantially identical to Mars

      Of course, there is no such other Mars in the solar system.

      The existence and composition of little atmospheric inclusions (i.e., tiny little bits of Martian air trapped in the rock) were another convincing piece of evidence for the Mars meteorites, as was the evidence of alteration by water.

      2. How do rocks leave Mars' gravity well in the first place? Are they shrapnel from Mars being hit by big meteorites?

      In a way. Suppose you have a big meteor hit (the size of the one that formed the Baringer Meteor Crater, or bigger). The meteor drills into the body and goes beneath the surface. At some point, it is stopped, and it dumps its kinetic energy into the body of the planet (i.e., for big impacts the meteorite explodes at depth). The shock wave is roughly spherical, and so the part directed upwards lifts up the surface above where the meteorite hit. Most of this material is lifted not much more than the depth of the explosion, forming the characteristic lip of the crater, and typically turning the layers in the rock upside down at the lip. Some of this material can be accelerated to much higher velocities, however, forming (for example) the rays of the new craters on the Moon. If the meteorite is really big, some of the surface material is accelerated to escape velocity and away it goes. After a little while (a few dozen to no more than a million years), some material will hit another planet. Mars and Earth have been trading material like this for the life of the solar system.

      The really amazing thing is that some of the material ejected is not treated too roughly. Spores and seeds etc. could definitely survive the trip.

    2. Re:Two questions... by Anonymous Coward · · Score: 0

      The really amazing thing is that some of the material ejected is not treated too roughly. Spores and seeds etc. could definitely survive the trip.
      Leading to interplanetary evolution.
      Intergalactic evolution.
      Web of life getting mighty big.

    3. Re:Two questions... by Anonymous Coward · · Score: 0

      The really amazing thing is that some of the material ejected is not treated too roughly. Spores and seeds etc. could definitely survive the trip.

      Here's proof that Shrooms are really alien life-forms! Especially the magic varieties that unfold all the mysteries of the universe in posing endless questions about life itself.

    4. Re:Two questions... by Anonymous Coward · · Score: 0

      sounds a little BS to me

      "and you can rule out every planet / asteroid but Mars"
      where is this catalog of every single asteroid to ever come close to earth since creation of earth?

      "At some point, it is stopped"

      yea when its out of energy genius

    5. Re:Two questions... by Tablizer · · Score: 1

      How do we know that a rock is from Mars?

      Look for the label "Made on Mars".

    6. Re:Two questions... by mbone · · Score: 3, Interesting

      sounds a little BS to me

      "and you can rule out every planet / asteroid but Mars"
      where is this catalog of every single asteroid to ever come close to earth since creation of earth?

      The list of asteroids with an atmosphere and liquid water is rather short (as in, non-existant). That also rules out Venus and Mercury. The isotope data rules out the Earth (or the Moon). These arguments also rule out the Jovian satellites and stuff further out. Conversely, other isotope data make it clear these objects do come from within the solar system somewhere.

      This was all argued out at length in the 1980's and there were many skeptics, but they were eventually convinced. I remember being at a debate in Paris where one of the leading skeptics was reduced to saying that, although these came from a body very much like Mars, and not like any other solar system body, that didn't prove they are from Mars. That was about when he lost me. Now, this is regarded as well established and not controversial at all.

      "At some point, it is stopped"

      yea when its out of energy genius

      It has to get vaporized first.

    7. Re:Two questions... by Anonymous Coward · · Score: 0

      Of course, there is no such other Mars in the solar system.

      You mean "there is no such other Mars in the solar system NOW".

      I guess Marvin had other planets obstructing his view of Venus in the past...

    8. Re:Two questions... by LongearedBat · · Score: 1

      Thank you for that. :)

  13. Job title - Moroccan Meteorite Dealer. by Andy+Prough · · Score: 1

    Hilarious. Beats the hell out of "Ghostbuster".

  14. Obviously a highly advanced civilzation. by Andy+Prough · · Score: 1

    No one else could possibly get past 9 molecules.

  15. We must be doing it wrong by Tablizer · · Score: 1

    We spend $2 billion on a Mars rover, and then Wham!, a Mars rock lands on somebody's ass.

  16. RTFA by Anonymous Coward · · Score: 0

    it says that scientists compared the scientific findings from the mars rovers, ie geological, biologic, and chemical results from those studies, etc and determined the meteorite fits undeniably the exactly same composite of rocks scientists are currently finding and studying on the martian surface with the rovers.

  17. Meanwhile, On Mars... by guttentag · · Score: 5, Funny

    In other news, Martian authorities report that a rare Earth meteor has been discovered to contain 10 times as much fissionable material as found in previous Earth meteorites. The finding calls into question previous assumptions within the scientific community that Earth may contain little fissionable material and therefore was deemed unlikely to support life. Still, some Martians are asking tough questions: "How do you know it came from Earth? Where's your proof? How do we know you're not just trying to save your precious space budget when we have more important things to worry about, like climbing out of the so-called Fiscal Crater?"

    1. Re:Meanwhile, On Mars... by Anonymous Coward · · Score: 0

      Thank you for the insightful laugh. It was needed.

  18. Re:Curiosity cost $2B USD by Anonymous Coward · · Score: 0

    yet has numerous applications

    Such as?

  19. Probes by leoaloha · · Score: 1

    When the Martians come here to do their anal probes, are they looking for water?
    Just asking!

  20. Venus by Intrepid+imaginaut · · Score: 1

    Venus is most like Earth in the solar system, not Mars.

  21. try googling asteroids water by Anonymous Coward · · Score: 0

    as we now think that the majority of the earths water may have been donated by asteroids, it may not be a surprise if an asteroid strike on mars resulted in a piece of mars rock with a piece of watery asteroid being hurled back out and finaly landing on the 3rd rock out.

  22. Re:Curiosity cost $2B USD by 2.7182 · · Score: 1

    Liquid crystal technology. Thank you, Kent State.

  23. Meteorite Dealer? by coofercat · · Score: 1

    > Purchased from a Moroccan meteorite dealer in 2011

    How do I get a job like that? Does anyone know someone that needs a house clearance or some such that may pop up a couple of meteorites I could stick on Ebay?

    (I'll name all my meteorites after music acts: NWA 7034, The Rolling Stones 2309, The meteorite formerly known as Prince 3476...)

    1. Re:Meteorite Dealer? by tehcyder · · Score: 1

      Just get some random rocks from your garden, paint them black and call them meteorites. The sort of rich twats who collect things won't know the difference (and you're hardly going to make much money flogging them to museums).

      --
      To have a right to do a thing is not at all the same as to be right in doing it
  24. Re:Curiosity cost $2B USD by Muad'Dave · · Score: 1

    Campbell's Condensed Tomato Soup.

    --
    Tiller's Rule: Never use a word in written form that you've only heard and never read. You will end up looking foolish.
  25. Free Mars! by Anonymous Coward · · Score: 0

    Free Mars!

  26. Call for Technology: Asteroid Attraction by TheRealHocusLocus · · Score: 1

    WHEREAS we have spent an incredible amount of money sending probes to Mars looking for traces of water only to find it on a meteorite that has impacted Earth;

    WHEREAS an inordinate amount of science has been conducted by lazy couch potato researchers utilizing passive methods of data collection of the cosmos, and this phenomenon in combination with illicit 64oz 'Big Gulp' sales has resulted in an epidemic of obesity among our revered scientists;

    WHEREAS several years' drought have reduced the yield of the annual rattlesnake hunt, a time honored tradition and risk-taking coming-of-age ritual of adolescence;

    WHEREAS the idea of humanity expanding its frontiers by populating the cosmos has been a crackpot idea from the start, as it has been discovered that Planet Earth has been part of the cosmos all along;

    IT IS THEREFORE RESOLVED that all efforts of space exploration by humans be abandoned, and humanities sole endeavor from this day forward shall be to develop robotic technology to divert meteorites and large asteroids onto a collision path with Earth, so we may learn even more about the universe in which we live, a 3km asteroid would provide enough data for generations of scientific study;

    IT IS FURTHER RESOLVED that the National annual 'varmit hunt' be re-tasked as the 'annual 3km asteroid flaming firestorm of death as we gather valuable spectroscopy data during its final approach ' hunt.

    Keep watching the skies. The truth is actually hidden under that grimy layer in your bellybutton.

    --
    <blink>down the rabbit hole</blink>
    1. Re:Call for Technology: Asteroid Attraction by Anonymous Coward · · Score: 0

      that was a lot of effort for nobody to mod you up... I would have but haven't had any points in a long time