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Thread: Interstellar Comet

  1. #181
    Join Date
    Mar 2008
    Posts
    672
    Loeb wrote an opinion critical of the nitrogen hypothesis:

    Was the Interstellar Object 'Oumuamua a Nitrogen Iceberg?

    https://www.scientificamerican.com/a...rogen-iceberg/

    It is true that Spitzer would not see Nitrogen if it was there because of its shorter wavelength. The absence of spin evolution is a serious constraint. Perhaps some support for the Nitrogen hypothesis may be found if a UV telescope can find some trace of Nitrogen along the trajectory allowing for adjustments due to solar pressure and wind since 2017-2018.
    Last edited by borman; 2021-Mar-20 at 10:16 PM. Reason: typo

  2. #182
    Join Date
    Jul 2004
    Posts
    2,286
    Extrasolar Object Interceptor could chase down interstellar objects, return samples https://phys.org/news/2021-05-extras...r-samples.html Oumuamua: A visitor from deep space has still made the scientists curious https://thefrontierpost.com/oumuamua...tists-curious/ Astronomers Search For Answers To Origins of Interstellar Visitors Like 'Oumuamua' https://science.slashdot.org/story/2...-like-oumuamua

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