Sandy Gas Jets Hypothesized on Mars

Illustration Credit & Copyright: Ron Miller (ASU)

Explanation: What’s causing seasonal dark spots on Mars? Every spring, strange dark spots appear near the Martian poles, and then vanish a few months later. These spots typically span 50 meters across and appear fan shaped. Recent observations made with THEMIS instrument onboard NASA’s Mars Odyssey, currently orbiting Marscarbon dioxide (CO2) ice beneath them. Based on this evidence, a new hypothesis has been suggested where the spots are caused by explosive jets of sand-laden CO2. As a pole warms up in the spring, frozen CO2 on the surface thins, perforates, and begins to vent gaseous CO2 held underneath. Within this hypothesis, interspersed dark sand would explain the color of the spots, while the underlying frozen CO2 would explain the coolness of the spots. Pictured above, an artist depicts what it might be like to stand on Mars and witness the venting of these tremendous gas and dust jets.

PS: I liked that picture. That’s why I posted it πŸ™‚


If practice makes perfect, and nobody is perfect, then why practice?

  • chaitΓΌ

    >i too like the picture πŸ™‚ and have no clue about your post πŸ˜‰

    If practice makes perfect, and nobody is perfect, then why practice?

    to become nobody πŸ˜›

  • Kumar Chetan

    >The grls can never get clue of some thing which involves grey matter.
    Am fine and doing somewhat great by keeping myself limited to my cubicle. If I go out grls just go wild πŸ˜›

  • shruti

    >hi dear,
    picture was really great and no idea abt the thing you have written but then i learned something today….

    take care

  • Krish


    poor gals πŸ˜€

    //If I go out grls just go wild :P//
    I u’stand dude πŸ™‚

    Welcome here shruti!

  • vibhor

    >hey nice picture dude..

  • Known Stranger

    >are we going to live their soon