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Webb makes first detection of one particular carbon molecule

The uncertainty of science: Using the Webb Space Telescope, astronomers have made the first detection of methyl cation (pronounced cat-eye-on) (CH3+) in space, located in a baby solar system the star-forming region of the Orion nebula about 1,350 light years away.

While the star in d203-506 is a small red dwarf, the system is bombarded by strong ultraviolet (UV) light from nearby hot, young, massive stars. Scientists believe that most planet-forming disks go through a period of such intense UV radiation, since stars tend to form in groups that often include massive, UV-producing stars.

Typically, UV radiation is expected to destroy complex organic molecules, in which case the discovery of CH3+ might seem to be a surprise. However, the team predicts that UV radiation might actually provide the necessary source of energy for CH3+ to form in the first place. Once formed, it then promotes additional chemical reactions to build more complex carbon molecules.

Broadly, the team notes that the molecules they see in d203-506 are quite different from typical protoplanetary disks. In particular, they could not detect any signs of water. [emphasis mine]

In the next day or so we shall likely see a number of stories in the mainstream press shouting some variation of “Webb finds key element of life!” Webb has done no such thing. It has found a carbon molecule not seen previously, which simply provides scientists another small data point in trying to understand the development of complex solar systems.

The highlighted sentences make clear the uncertainty in this field and the general shallow amount of knowledge. For example, why carbon molecules but no water, which is made up of hydrogen and oxygen, both ubiquitous throughout the universe and found in large amounts in star-forming regions?

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 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.


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"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

5 comments

  • David Reid Ross

    Relevant I think: the soot layer, where complex carbon chains can form and survive, but water gets blown out further –
    https://earthsky.org/space/habitable-exoplanets-soot-zone-protoplanetary-disk/

  • Allan

    You predicted that one correctly, Bob. Daily Mail science section headline “…forms the foundations of all known life”.

  • James Street

    Six second video of an actual cat-eye-on
    (Just close the pop-up. You don’t need to login)
    https://tinyurl.com/27a387yc

  • TallDave

    rocky planets with magnetic fields strong enough to retain their water are probably exceedingly rare even around stars like ours, as Earth’s seems to depend on some very particular parameter ranges in the Theia impact

    also note that without life to eat the CO2 and provide an oxidizing atmosphere, even Earth would look like Venus by now as outgassing CO2 slowly built up

    Mars and Venus seem to be the rule… way too much atmo, or not nearly enough

    an oxygen atmosphere on a rocky Goldilocks zone planet would imply life — now that would be exciting

    but unlikely

  • Star Bird

    A Class M Planet is one like Earth with Oxegen Nitrogen Atmosphear

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