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Atomic oxygen in Mars’ atmosphere, as seen by Al-Amal

Oxygen distribution on Mars

The UAE’s Al-Amal Mars orbiter on July 19, 2021 released a new spectroscopic image, showing the global distribution of atomic oxygen in the Martian upper atmosphere.

The Emirates Ultraviolet Spectrometer (EMUS) mapped the distribution of atomic oxygen in the planet’s upper atmosphere, showing a dense patch emerging from the nightside into the new day.

The photo to the right, cropped and reduced to post here, shows this.

Over the next two years, covering one single Martian year, Al-Amal will monitor the distribution of this oxygen to see how it fluctuations from season to season, as well as from day to day. Gather this information will help the theorists untangle the past atmospheric history of Mars.

Genesis cover

On Christmas Eve 1968 three Americans became the first humans to visit another world. What they did to celebrate was unexpected and profound, and will be remembered throughout all human history. Genesis: the Story of Apollo 8, Robert Zimmerman's classic history of humanity's first journey to another world, tells that story, and it is now available as both an ebook and an audiobook, both with a foreword by Valerie Anders and a new introduction by Robert Zimmerman.

 

The print edition can be purchased at Amazon. from any other book seller, or direct from my ebook publisher, ebookit. The ebook is available everywhere for $5.99 (before discount) at amazon, or direct from my ebook publisher, ebookit. If you buy it from ebookit you don't support the big tech companies and the author gets a bigger cut much sooner.


The audiobook is also available at all these vendors, and is also free with a 30-day trial membership to Audible.
 

"Not simply about one mission, [Genesis] is also the history of America's quest for the moon... Zimmerman has done a masterful job of tying disparate events together into a solid account of one of America's greatest human triumphs."--San Antonio Express-News

3 comments

  • It looks like the UAE is doing good science with their Mars probe.

  • Meta-question: I understand the chemical difference between “atomic oxygen” (O) and “molecular oxygen” (O2), but what’s the practical difference?

    What are the units? How does this differ from Earth? Do we even have atomic oxygen in our atmosphere? Links are great answers.

  • wayne

    markedup2–
    the short answer is–atomic oxygen is more reactive than molecular oxygen, in general, and especially in ‘atmospheres.’ It readily combines with itself and most everything else at a wide range of temperature & pressure.
    (chemistry & physics– has to do with the electron orbits and energy-states)
    On Earth it no longer makes a practical difference, essentially all oxygen is now molecular oxygen.
    (oxygen was once a toxic ‘pollutant’ on Earth)

    3 page PDF (hotlink)
    “Energetic and Chemical Reactivity of Atomic & Molecular Oxygen
    https://three.jsc.nasa.gov/articles/RadChemO2Sidebar.pdf

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