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Mysterious White Cloud Hangs Over Martian Volcano (vice.com)

Last month, the European Space Agency's Mars Express orbiter spotted a white cloud suspended over the western slope of Arsia Mons, an enormous volcano near the red planet's equator. The 930-mile-long cloud looks like the kind of volcanic plumes huffed out by Earth's active volcanoes -- but it's not; "Arsia Mons is long extinct -- its last eruption is estimated to have occurred around 50 million years ago," reports Motherboard. From the report: The volcano still plays a role in shaping the water-ice cloud, though, along with atmospheric dust levels and the Martian seasons. With its 12-mile-high peak and diameter of nearly 400 miles, Arsia Mons is 30 times more voluminous than the largest volcanoes on Earth. Its humongous bulk condenses and cools air currents as they pass over the summit, creating this âoeorographic cloudâ -- a nephologic formation that tend to form over leeward (downwind) slopes -- on the western flank of the volcano.

59 comments

  1. So it's not mysterious. by Anonymous Coward · · Score: 1

    When did headlines evolve to say the opposite of what the article says?

    1. Re:So it's not mysterious. by Anonymous Coward · · Score: 0

      Maybe it actually is enigmatic, ambiguous, arcane, cryptic, dark, deep, elliptical, equivocal, inscrutable, murky, mystic, nebulous, obscure, occult or opaque cloud? One of those. Or it's the case of the Martians having the best weed in the solar system.

    2. Re:So it's not mysterious. by jfdavis668 · · Score: 2

      Maybe it is being made by the Mysterons? https://en.wikipedia.org/wiki/...

    3. Re:So it's not mysterious. by Anonymous Coward · · Score: 0

      Maybe all the martian teen boys reached puberty?

      Mars Needs Women!!!!

    4. Re: So it's not mysterious. by Anonymous Coward · · Score: 0

      Martian farts. It's what happens when the congregate at the summit.

    5. Re: So it's not mysterious. by Anonymous Coward · · Score: 0

      Musk farts, not Martian farts.

  2. There are no air currents on Mars. by Anonymous Coward · · Score: 1

    Mars has an atmosphere, not air.

    1. Re:There are no air currents on Mars. by Anonymous Coward · · Score: 1

      Air and atmosphere are used interchangeably. you can find articles on the offical NASA website referring to "martian air". Case in point, these articles found with Google. You can email NASA that they're doing it wrong.
      https://www.nasa.gov/centers/ames/multimedia/images/2005/dust_devils.html
      https://solarsystem.nasa.gov/news/472/10-things-mars-helicopter/
      https://svs.gsfc.nasa.gov/12083

    2. Re:There are no air currents on Mars. by Anonymous Coward · · Score: 0

      If there is no air, then how the hell do the aliens breathe? I swear, you conspiracy guys are dense!

    3. Re:There are no air currents on Mars. by jfdavis668 · · Score: 1

      Mars has far less atmosphere than Earth, but it does have some. That is how it had dust storms all summer when it was in a good position to observe from Earth.

    4. Re: There are no air currents on Mars. by Type44Q · · Score: 1

      Whoosh. Very faint though, in the thin... air.

    5. Re:There are no air currents on Mars. by tigersha · · Score: 1

      So what are we supposed to call the currents in the gas around Mars then? Gas currents? Methane Currents? Martian Atmospheric Gas Flow Movements? MAGFMs?

      Seriously, Air Currents are a good enough analogue.

      --
      The dangers of excessive individualism are nothing compared to the oppressiveness of excessive collectivism
    6. Re:There are no air currents on Mars. by Anonymous Coward · · Score: 0

      Wind.

    7. Re: There are no air currents on Mars. by Anonymous Coward · · Score: 0

      That's it. MAGFM. Make America Great For Mexicans. I've got some blue hats to make...

    8. Re: There are no air currents on Mars. by Anonymous Coward · · Score: 0

      I thinks mostly Central Americans that the CIA is caravanning up here.

  3. What is it? by Anonymous Coward · · Score: 0

    They're coming. This is the voice of the mysterons.

    1. Re:What is it? by jfdavis668 · · Score: 2

      We know that you can hear us Earthmen.

  4. A what now? by Anonymous Coward · · Score: 0

    A "âoeorographic cloudâ"? Can we hit preview before posting a word I'm willing to bet few people have ever seen to ensure it isn't mangled by Unicode non-compliance?

    1. Re:A what now? by Anonymous Coward · · Score: 0

      The funny thing about that is that /. has to do extra work to be Unicode non-compliant
      as pretty much everything (and all modern browsers) accepts and can produce utf-8
      encoded characters.

      CAP === 'mouths'

    2. Re:A what now? by Anonymous Coward · · Score: 0

      I assume this is "orographic cloud", but orographic clouds form on the windward side or top of mountains as the rising air is cooled. As it passes to the leeward side, they thin out, becoming lenticular clouds.

  5. The Eve of War by Anonymous Coward · · Score: 0

    The chances of anything coming from Mars, were a million to one, he said...

  6. Triggered! by Anonymous Coward · · Score: 0

    Somewhere out there all around on Earth, are thousands of social justice warriors of European decent who are feeling guilty for this racial slur in the Martian atmosphere and are right now scheduling rallies and boycotts to get rid of this imagined political scourge.

    1. Re:Triggered! by Anonymous Coward · · Score: 0

      It's worse than you think. The martian atmosphere is over 95% CO2 and yet it refuses to warm so Mars is a climate denier, too!

  7. You know what this means - by sheramil · · Score: 5, Funny

    We have a new... er... Martian Pope!

    1. Re:You know what this means - by Anonymous Coward · · Score: 0

      Good! The prior one defended asteroid molesters.

  8. Motherboard? by msauve · · Score: 5, Informative

    Really, clickbait to a site which describes it as "a booger?" How about a link to the source.

    --
    "National Security is the chief cause of national insecurity." - Celine's First Law
    1. Re:Motherboard? by Anonymous Coward · · Score: 0

      Arguably it's more bird-poopish, than boogery.

    2. Re:Motherboard? by knorthern+knight · · Score: 1

      > Since a human being exposed for two days to even 10
      > roentgens would only have an even chance of survival , the
      > radiation belt obviously present an obstacle to space flight."
      >
      > Yet they sent men to the Moon a mere 10 years later (take
      > note of the rustic '60s hardware and the narrow window they
      > shove anti-radiation shields

      A few answers...
      1) They did not spend "2 days" in the belts. They "rocketed through" at earth escape velocity.
      2) You're talking about the radiation in space. The walls of the Apollo capsule cut down on the radiation passing through.
      3) The flight path avoided the worst of the Van Allen belts (around earth's equator) by flying around it.

      https://www.popsci.com/blog-ne...
      > Over the course of the lunar missions, astronauts were
      > exposed to doses lower than the yearly 5 rem average
      > experienced by workers with the Atomic Energy Commission
      > who regularly deal with radioactive materials.

      > and geostationary satellites, invented by *a science fiction author*, the famous Arthur C. Clarke

      Get serious already.. Physics 101. Since the time of Sir Isaac Newton (and his formulation of the law of gravity). it has been known that a satellite (natural or artificial) at a specific distance above the equator would revolve around the earth synchronously with the earth's rotation. Arthur C. Clarke "invented" nothing. He merely wrote a sci-fi story about the (mis)use of such a satellite to broadcast porn

      > remain fully functional for decades in the midst of the 2nd radiation belt at ~22000 miles of altitude.

      It's called "hardened circuitry". Consumer grade electronixs would die in a few months. One reason satellites are so expensive is that their circuitry is hardened against radiation. It could be done for your laptop... if you were willing to pay $50,000 for it.

      > What about constellations that haven't updated their shapes
      > since the times of Ptolemy who himself, for his Almagest,
      > relied on even older, by about 500 years, documents?

      They *DO* change... ve-r-r-r-r-y slowly. Try 150,000 years... https://www.wired.com/2015/03/...

      > * How is it that daylight opacifies the sky so that no *light emitting* star is to be seen from Earth

      Sigh... it does no such thing. Starlight is *VERY* faint. Our eyes (and cameras) only have a small dynamic range between the dimmest object they can resolve while not getting blinded (cameras overexposed) by brighter objects or background. Have you ever been out in the countryside at night at new moon and seen The Milky Way? Try it at night from a city with streetlights present You'll have a hard time seeing any stars. The stars are just as bright during the day as they are at night.

      BTW, same thing happened on the Moon (Apollo camera images) with no atmosphere. The reflected glare off the moon's surface drowns out the stars when photographing the rover, etc. However, pointing up at the sky would see stars if no reflacted glare off mountains, etc..

      --

      I'm not repeating myself
      I'm an X window user; I'm an ex-Windows user
    3. Re:Motherboard? by RockDoctor · · Score: 1

      How about a link to the source.

      Thanks for keeping up the good work.

      --
      Birds are not dinosaur descendants;birds are dinosaurs, for all useful meanings of "birds", "are" and "dinosaurs"
  9. ââââââ by Anonymous Coward · · Score: 0

    âââââââââââ

  10. Prepare for tripods by Somebody+Is+Using+My · · Score: 1

    The Martian's are firing their giant cannons to launch their war-machines towards us. The invasion of Earth has begun.

    1. Re:Prepare for tripods by CrimsonAvenger · · Score: 2

      The Martian's are firing their giant cannons to launch their war-machines towards us. The invasion of Earth has begun.

      Oh, please! Everyone knows the Martian cannons have a GREEN flash, not a white one....

      --

      "I do not agree with what you say, but I will defend to the death your right to say it"
  11. Re:There is neither outer space by Anonymous Coward · · Score: 1

    "John Bahcall was a promising young astrophysicist when he was introduced to Gödel at a small Institute dinner. He identied himself as a physicist, to which Gödel’s curt response was "I don’t believe in natural science." The philosopher Thomas Nagel recalled also being seated next to Gödel at a small gathering for dinner at the Institute and discussing the mind—body problem with him, a philosophical chestnut that both men had tried to crack. Nagel pointed out to Gödel that Gödel’s extreme dualist view (according to which souls and bodies have quite separate existences, linking up with one another at birth to conjoin in a sort of partnership that is severed upon death) seems hard to reconcile with the theory of evolution. Gödel professed himself a nonbeliever in evolution and topped this off by pointing out, as if this were additional corroboration for his own rejection of Darwinism: “You know Stalin didn’t believe in evolution either, and he was a very intelligent man.”" (Incompleteness: the proof and paradox of Kurt Gödel, Rebecca Goldstein, pp. 31-32)

  12. Typo by IndigoZulu · · Score: 1

    That should be "orographic cloud" not "âoeorographic cloudâ."

  13. Last scene of original 'Total Recall' playing out: by MrKaos · · Score: 1

    "Get Your Ass to Mars" activated the pyramid.

    --
    My ism, it's full of beliefs.
  14. Re:There is neither outer space by Anonymous Coward · · Score: 0

    Nor were there dinosaurs. He who believes not in God, prostitutes his faith to any fancy.

    If there is a God, I bet he's got a better imagination than you.

  15. It's always Jupiter... by Anonymous Coward · · Score: 0

    that takes all the credit for keeping most asteroids from crashing into earth, but we should not forget the Arsia Mons canon that takes care of the rest!

  16. Re: There is neither outer space by Anonymous Coward · · Score: 0

    This is why I am taking a hiatus from reading Slashdot

  17. Is it pointing at earth?? by Anonymous Coward · · Score: 0

    It's Marvin the Martian powering up his subterranean giant laser gun! Get out the giant mirror to deflect it!

    1. Re:Is it pointing at earth?? by Tablizer · · Score: 1

      It's Marvin the Martian powering up his subterranean giant laser gun

      He found the plug.

  18. Milestone Achieved by SaBumNim · · Score: 1

    Snoop Dogg is the first to land on Mars!

  19. Maybe by Anonymous Coward · · Score: 0

    It's Elon Musk, fake smoking a lot of weed in his new home on Mars for some weird PR stunt reasons.

  20. Like a lenticular cloud by PPH · · Score: 2

    Lenticular clouds are also created by air currents being lifted over mountains (or other terrain features). But they tend to disappear a short distance downwind of this point due to the air descending and the condensation re-evaporating. Either meteorology and thermodynamics are vastly different on Mars than on Earth, or this appears to be some gas venting from the summit.

    --
    Have gnu, will travel.
  21. That's a cloud? by reboot246 · · Score: 1

    I thought it was just a smudge on my telescope's eyepiece.

  22. Trump? by Anonymous Coward · · Score: 0

    How did dozens of posts manage to avoid saying something about Trump and prison and his fault for AGW on Mars and such?

    Is the TDS crowd too depressed to post due to the Red Wave, coming 7-2 SC majority and 2020 re-election?

    But! Worry not my brave SJW socialist friends! Chelsea has all but announced her 2020 entry into politics! You are saved by the coming of the child of The First Rapist and The Most Incompetent Candidate for POTUS, ever! Lol

  23. Curses! Foiled again! by Anonymous Coward · · Score: 0

    I thought I was clever putting my evil underground volcanic lair on another planet! But the heroes discovered it anyway!

    Minions, retreat! Back to the inside of the Moon!

  24. This scene :) btw. by burni2 · · Score: 1
    1. Re:This scene :) btw. by MrKaos · · Score: 1

      yep - this is THE scene - thanks!

      --
      My ism, it's full of beliefs.
  25. Dog wagging the tail by Impy+the+Impiuos+Imp · · Score: 0

    Mysterious White Cloud Hangs Over Martian Volcano

    The 930-mile-long cloud

    It's the collected steam pouring from the ears of every Earthling on hearing Kylie Jenner is the world's youngesf self-earned billionaire, getting a million dollars a tweet.

    --
    (-1: Post disagrees with my already-settled worldview) is not a valid mod option.
  26. Family squabbles by Tablizer · · Score: 1

    Jupiter: "Okay, who farted?"

  27. Exhaust by Anonymous Coward · · Score: 0

    This is just built up exhaust being vented from the underground Martian colonies.

  28. Re:Last scene of original 'Total Recall' playing o by sabbede · · Score: 1

    Quaid activated The Machine!

  29. Re:Last scene of original 'Total Recall' playing o by MrKaos · · Score: 1

    See you ad dhe pardy Richtder!

    --
    My ism, it's full of beliefs.
  30. Re:Last scene of original 'Total Recall' playing o by sabbede · · Score: 1

    Now that is how you disarm your opponent!