A Big Glowing Cloud of Marsdust

Posted: July 8, 2021 by oldbrew in atmosphere, dust, Gravity, solar system dynamics
Tags: ,

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Escaping a planet’s gravity is supposed to be difficult, but some Martian dust does just that.

Spaceweather.com

July 6, 2021: Dust storms on Mars are bigger than we thought; they even spill into space. According to a recent paper in JGR Planets, Mars appears to be leaking dust, filling a huge volume of the inner solar system with gritty debris. You can see it with your naked eye. The bright triangle in this image from the Haleakalā Observatory in Hawaii is marsdust:

“A friend described it as blazing,” says Rob Ratkowski, who took the picture on Feb. 10th. “It was bright and very obvious.”

It’s called Zodiacal Light, and astronomers have long wondered what causes it. The usually faint triangle is sunlight scattered by dust in the plane of our solar system. The dust, it turns out, comes from Mars.

NASA’s Juno spacecraft flew through the dust cloud en route to Jupiter between 2011 and 2016. Dust grains smashed into Juno at about 10,000 mph…

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Comments
  1. ichor0 says:

    a paper conjectured (maybe before realizing how high the dust rose)
    “Their occurrence in these low pressure (~1 mbar) environments might be possible to a Greenhouse and Thermophoresis (GT) effect which lowers the threshold for dust entrainment by wind stress.”
    https://ui.adsabs.harvard.edu/abs/2009LPI….40.1961R/abstract

    The greenhouse effect? And I did not read it to see if it explains it escaping entirely.

    more on thermophoresis
    https://news.uchicago.edu/story/new-method-uses-heat-flow-levitate-variety-objects

  2. gbaikie says:

    All planets have dust rings and probably have quasi moons. Ie:
    “469219 Kamoʻoalewa, an asteroid discovered on 27 April 2016, is possibly the most stable quasi-satellite of Earth.”
    https://en.wikipedia.org/wiki/Claimed_moons_of_Earth

    So if have 20 meter diameter space, one should many rocks less than than say 5 meter in diameter, and more 1/2 meter in diameter, and many more the size of baseballs or smaller, ect.
    Google: does Venus have quasi moon?
    “Venus has one known quasi-satellite, (524522) 2002 VE68.”
    Key thing is known.
    Or another way to say it, if planet has a dust ring, then probably has one more quasi moon.
    Or if Mars has a lot, probably has a lot of quasi moons.
    Goggle: does Mars have quasi moons?
    Nothing, maybe because Mars has two small moons people aren’t any looking for any Mars quasi moons, but also due Mars more elliptical orbit and greater distance and dimmer sunlight- harder to see them.
    Also I heard it said that Mars gets twice the amount impactors hitting it as hit Earth and always assumed less hit Venus as compared to Earth.

  3. tom0mason says:

    So a very thin atmosphere and next to no effective magnetic field encompassing Mars but these aura effects still congregate around certain areas of this planet.
    So it’s now dust and a minuscule surface magnetism. Where’s the measured evidence, where’s the data?
    humm, grasping at straws maybe?

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