Environmental News

Discussion in 'Environmental Discussion' started by tochatihu, Oct 22, 2015.

  1. bisco

    bisco cookie crumbler

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  2. Trollbait

    Trollbait It's a D&D thing

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  3. bisco

    bisco cookie crumbler

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    i think i recently read a book like that. i wish i could remember the name, but it wasn't the one that sued the movie for stealing their idea.
    i can't find it, so i must be misremembering
     
  4. fuzzy1

    fuzzy1 Senior Member

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    "As an observer and operations engineer at the Catalina Sky Survey, a NASA-funded planetary defense program that utilizes the telescopes atop the Santa Catalina Mountains, he [David Rankin] spends hours looking for dangerous rocks that could cause catastrophic damage to Earth."

    Yes, the Catalina Sky Survey has been the greatest producer in the search for Near-Earth Asteroids (NEAs), though a separate group named Pan-STARRS has also been a major producer over the past decade:

    Screenshot 2026-01-12 210855.jpg

    Though the new Vera C. Rubin Observatory might soon take the lead.

    Total known NEAs have been growing exponentially for a long time, but the discovery rate of the really big ones, over 1 km size, has dropped very sharply, from a peak of 79 in year 2000, to just 2 each in 2024 and 2025, statistically suggesting that most have already been found. The rate for rocks in the range of 140-1000 m, also quite serious, still appears stable, suggesting lots more to be found. The major growth now is in finding the little ones, under 140 meters.


    Screenshot 2026-01-12 210946.jpg

    Screenshot 2026-01-12 210920.jpg


    I just might get a chance to stop by the Mt. Lemmon observatory later this month. Original planned to ski there while in town for an unrelated event, but snow is seriously lacking, as in totally absent. So instead, make some Lemmonade . . .
     
    #3024 fuzzy1, Jan 13, 2026 at 12:21 AM
    Last edited: Jan 13, 2026 at 12:28 AM