ALH 84001 and Other Martian Meteorites

Dr. David McKay, Chief Scientist for Astrobiology at the Johnson Space Center, lectures on his scientific experience with meteorites, more specifically ALH 84001.
Stanford University:
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Stanford University Channel on KZread:
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Пікірлер: 39

  • @zapfanzapfan
    @zapfanzapfan4 жыл бұрын

    A very interesting rock! Must go looking for an update.

  • @maria650
    @maria6503 жыл бұрын

    i have one rock with these little web of glazed bumps. the crust is not the usual burned fusion but a coating of a glassy "net". over a granular surface. i have a feeling its a meteorite because the inside composition is weird as well kinda blu light teal green

  • @jegatheeswarankanthasamy4238
    @jegatheeswarankanthasamy42382 ай бұрын

    Thanks for the information

  • @133356445467d
    @133356445467d5 жыл бұрын

    The impact eject phase, makes everything molten in split seconds, Quench is mass against mass, molten expanding plates, pressure against the surrounding, making a ridge, pieces from outside the ridge is triangular and from inside is square wider in one end then the other, near the eject center is less wide then longer away, also it can be twisted in the end near the eject center, it moves up faster. what about dating the Bromine Jet Fan Vents.

  • @133356445467d
    @133356445467d5 жыл бұрын

    Thanks for lecture. Besides the evaporation halogens of Mars surface, can easy contribute the a insect larve state, liquid surface tension evaporation.. Clay rocks, or upon sedimentary rocks, recrystallized together could keep ????

  • @MrJashuaDavies
    @MrJashuaDavies3 жыл бұрын

    someone give this whole room some cough drops

  • @vaiduriampalaniappan9021
    @vaiduriampalaniappan90213 жыл бұрын

    Does a rock have veins flowing inside? Does a rock have blue crystals embedded in it? Please clarify. Calcium carbonate can be present in meteorites?

  • @DmitryShevkoplyas
    @DmitryShevkoplyas3 жыл бұрын

    Thank you!

  • @nicodoman1247
    @nicodoman12472 жыл бұрын

    Hi we're can a sent may photos of may rock? ??

  • @uomuamua5995
    @uomuamua59954 жыл бұрын

    I have a lot of different kind of meteorite kind of object from outer spare. . Mostly it's massive kind of meteorite I'm looking for any interested I have also found UOMUAMUA the first interstellar come on earth. .

  • @mirnaalfaro3615
    @mirnaalfaro36152 жыл бұрын

    Excelente información fro a scientic

  • @user-xw4sw9bd1n
    @user-xw4sw9bd1n4 жыл бұрын

    I have a total of beautiful meteorites how to contact you

  • @alangeisdorf4198

    @alangeisdorf4198

    4 жыл бұрын

    i have some cool ones i've found also

  • @41angelfire
    @41angelfire12 жыл бұрын

    actually i believe they have reverse polarity ,i can say this cause i have 3 sitting right in front of me.weighing 108 gram 110 grams and i have not weighed this last one yet.

  • @41angelfire
    @41angelfire12 жыл бұрын

    @yakomuto they look more petrified,about it.

  • @41angelfire
    @41angelfire12 жыл бұрын

    it has polarity but is not magnetic,and the polarity seems like it is moving around.really weird to me.i actually think i have 4. 1 is green,1 is red,1 looks something like calcite,with the outer layer of a meteorite,and the other has outer layer,with the shinny smooth center.i found all these in arkansas.

  • @bengray5013

    @bengray5013

    5 жыл бұрын

    angela mcmillan none of your descriptions sound like meteorites

  • @thecuongluu8388
    @thecuongluu83883 жыл бұрын

    Tôi có 1 viên 🤗

  • @bertalusingebius4412
    @bertalusingebius44123 жыл бұрын

    ALLÔ RÉCEPTION? ICI MÉTÉOR 84001!DIEU STANLEY LE FORT

  • @anything1795
    @anything17953 жыл бұрын

    Sorry to ask what rock is this on this video in this link: kzread.info/dash/bejne/qoNqkrarqK3aoLg.html Thanks for this channel and for all of you,,

  • @GoesUnpunishDeity
    @GoesUnpunishDeity7 жыл бұрын

    I have a side by side of ALH micromaggot comparison to mine, go to pin folder "meteorite my space rock " Pinterest.

  • @wmgthilgen
    @wmgthilgen5 жыл бұрын

    Since Mars has less mass than Earth, the surface gravity on Mars is less than the surface gravity on Earth. The surface gravity on Mars is only about 38% of the surface gravity on Earth, so if you weigh 100 pounds on Earth, you would weigh only 38 pounds on Mars. That said, how does a rock of any size leave the surface of Mar's? Think about it!

  • @NisarAhmad-tc3ji
    @NisarAhmad-tc3ji7 ай бұрын

    🤚 meteorite 👍good peace

  • @yakomuto
    @yakomuto14 жыл бұрын

    no one seems really exited... they do all realize that they're talking about Extraterrestrial life right?

  • @danielduarte6086

    @danielduarte6086

    7 жыл бұрын

    well, too much emotions can spoil the whole thing :) let the guys study it further

  • @MrKmanthie

    @MrKmanthie

    6 жыл бұрын

    yakomutto ...you mean "excited". And, this is the point; it WASN'T about E.T. life. The idiotic, American media, except for some newspapers w/intelligent staff, like the NEW YORK TIMES, who have a fabulous staff of science writers & seemingly didn't jump into the fray of ignorant slobs writing retarded stories & wrongheaded cartoons, implying that NASA had said anything about there being "life on Mars"; they only reported on what was found on this meteorite & the minerals, molecules, etc. that had been discovered on it. Luckily, as often happens, truth will out & it has turned out that those involved with the discovery & research, etc. of this meteorite & the info they gleaned from it, were shown to be correct all along. But, as for "exciting" ...no, I don't think it was "exciting" at all. In fact, the thing was so dry, so dull, so boring that I just tuned out after about 20 minutes or so. Reminded me of this duller-than-dirt math teacher I had back in school!! Almost every day I'd end up falling asleep in his class because he was so damn boring!

  • @bengray5013

    @bengray5013

    5 жыл бұрын

    Extraterrestrial life? Nope not yet

  • @TheSerpentEagle
    @TheSerpentEagle2 жыл бұрын

    THIS SEEMS LIKE A LOT OF WORK AND STUDY JUST TO FIND OUT IF THERE IS LIFE IN OTHER PLACES, does logic not do it for them? Do we have to be so scientific about is their life other places? I can promise that there is life in other places because pure LOGICS tells me so.

  • @arturkrzyzanowski8937
    @arturkrzyzanowski89377 жыл бұрын

    Astrofaza