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Impact ~ NEO; Near Earth Objects

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  • This is the one to watch out for iirc…

    99942 Apophis (/əˈpɒfɪs/, previously known by its provisional designation 2004 MN4) is a 370-meter diameter near-Earth asteroid that caused a brief period of concern in December 2004 because initial observations indicated a probability of up to 2.7% that it would hit Earth on April 13, 2029. Additional observations provided improved predictions that eliminated the possibility of an impact on Earth or the Moon in 2029. However, until 2006, a possibility remained that during the 2029 close encounter with Earth, Apophis would pass through a gravitational keyhole, a small region no more than about 0.5 mile wide, or 0.8 km[8][9] that would set up a future impact exactly seven years later on April 13, 2036.
    Lambert of Montaigu - Crusader.

    Bolgios - Mercenary Game.


    • Originally posted by Snowygerry View Post
      I suspect that by 2036 I may not be around (or non compos mentas) so one is tmpted to adopt the Alfred E Newman slogan "What me worry"
      Human history becomes more and more a race between education and catastrophe (H G Wells)
      Mit der Dummheit kaempfen Goetter selbst vergebens (Friedrich von Schiller)


      • Originally posted by MarkV View Post
        According to a BBC bulletin this morning two medium sized asteroids are crossing Earth's orbit about now. An 'expert' reassured the public that they weren't big enough to be civilisation killers and would merely wipe out everyone in any continent that was impacted and change the weather for decades - so not that big a deal then . Fortunately they will pass about 3 million miles away so no need to cancel any season tickets etc
        About 11-12 times the distance of the Moon from Earth, so not as close a call as some passages have been.
        TANSTAAFL = There Ain't No Such Thing As A Free Lunch


        • Human Extinction Almost Certain Due To Impending Asteroid Impact, Scientist Warns

          A cosmochemist warned that human extinction is almost guaranteed if Earth gets hit by a planet-killer asteroid. The scientist also noted that despite NASA’s plans to protect Earth from asteroids, the chances of a major impact happening are still pretty big.

          In her latest book “Catching Stardust,” cosmochemist Dr. Natalie Starkey briefly explained the true meaning of International Asteroid Day. This is an annual event that commemorates the large explosion caused by a meteor that detonated over a region in Siberia on June 30, 1908.

          For Starkey, International Asteroid Day should remain as a constant reminder of what space rocks can do to the planet and its inhabitants. She also noted that the annual event serves as a warning about how a major asteroid impact can easily wipe out humans on the planet.
          Similar to what happened to the dinosaurs 66 million years ago, humans are in danger of getting wiped out if an asteroid several miles long hits Earth. Aside from the magnitude of the initial explosion, the wide-scale extinction will also be caused by extreme environmental events that will be triggered by a major asteroid impact.

          Of course, NASA and other space agencies around the globe are doing their best to prevent another extinction-level event from happening. Through satellites and other sophisticated monitoring systems, these agencies are keeping track of asteroids that might collide with Earth in the future.

          So far, the agencies noted that they haven’t detected a major asteroid that has a 100% chance of hitting Earth within the next century.

          Despite the agencies’ assurance, Starkey believes that it is still highly possible for an asteroid to remain undetected in the vastness of space. For the cosmochemist, this kind of asteroid is what the people of Earth should be worried about.

          “There is always the possibility a random object that scientists can’t yet see is lurking out there in the outer Solar System, in an orbit that intersects that of Earth within the next few decades,” she said.

          “The problem is that it is currently impossible for astronomers to track every object in the Solar System, particularly the small and fast-moving ones that are on random orbits,” Starkey added.

          TANSTAAFL = There Ain't No Such Thing As A Free Lunch


          • As of 04/22/2014 ...

            Earth Hit By 26 Nuclear-Level Asteroid Impacts Since 2000 - How Frequent Are ‘City-Killer’ Asteroids?
            A new report released by the B612 Foundation indicated that asteroid impacts, each with the power of a single nuclear explosion, may be more frequent than previously thought. While there have been zero nuclear explosions in recent years, the Nuclear Test Ban Treaty Organization’s (CTBTO) International Monitoring System (IMS) has detected 26 nuclear-level explosions caused by asteroid impacts since 2000.

            Most, but not all, of these asteroid impacts occurred too high in Earth’s atmosphere to cause significant damage to the planet, but scientists are troubled by how these asteroids went undetected before they collided with the planet's atmosphere. According to the B612 Foundation, a private organization dedicated to creating an asteroid prevention and early warning system, an asteroid impact occurred in 2013 over Chelyabinsk, Russia, and although it reached the planet undetected, it caused damage to thousands of buildings in the city.

            Former NASA scientist Ed Lu, CEO and cofounder of the B612 Foundation, wants to launch the Sentinel Space Telescope Mission, a deep-space early warning system that would detect Earth-bound asteroid threats using an infrared telescope.

            Meanwhile, some "loons" think that the USA, or Earth, having a "Space Force" which could have capability to deflect and/or "destroy" such a short notice impactor is a waste of money and effort.
            TANSTAAFL = There Ain't No Such Thing As A Free Lunch


            • Such may have happend before, in not so distant times;

              Comets and The Bronze Age Collapse
              By Bob Kobres
              . . . and from heaven a great star shall fall on the dread ocean and burn up the deep sea, with Babylon itself and the land of Italy, by reason of which many of the Hebrews perished,
              . . . Be afraid, ye Indians and high-hearted Ethiopians: for when the fiery wheel of the ecliptic(?) . . . and Capricorn . . . and Taurus among the Twins encircles the mid-heaven, when the Virgin ascending and the Sun fastening the girdle round his forehead dominates the whole firmament; there shall be a great conflagration from the sky, falling on the earth;


              OR ...
              Vedic Comet - The Cosmic Tusk
              A friend of the Tusk sent me a fascinating website, The Meaning of the Vedas, stating the hypothesis of Mr. Ravindra Vasudeo Godbole that the origin of the ancient Vedic oral literature of India and Pakistan was the trauma of repeated bombardments from the Taurid cometary debris stream (so well described by Bill Napier and blogged here on the Tusk). To properly critique the argument, one would have to be Vedic scholar, which Godbole clearly is — and I am not. But from the peanut galley it sure appears to be a well considered proposition.

              From The Meaning of the Vedas:

              Earth, Air, Fire, and Water: The Archaeology of Bronze Age ...

     › full
              by B Masse - ‎1998 - ‎Cited by 20 - ‎Related articles
              It is my purpose in this paper to explore the likelihood that terrestrial and oceanic impacts by comets, asteroids, and meteorites are largely responsible for the ...
              An exploding meteor may have wiped out ancient Dead Sea ...
              By Bruce Bower
              November 20, 2018 at 11:00 am

              DENVER — A superheated blast from the skies obliterated cities and farming settlements north of the Dead Sea around 3,700 years ago, preliminary findings suggest.
              Radiocarbon dating and unearthed minerals that instantly crystallized at high temperatures indicate that a massive airburst caused by a meteor that exploded in the atmosphere instantaneously destroyed civilization in a 25-kilometer-wide circular plain called Middle Ghor, said archaeologist Phillip Silvia. The event also pushed a bubbling brine of Dead Sea salts over once-fertile farm land, Silvia and his colleagues suspect.

              Meteor Explosion Could Have Taken Out Entire Bronze Age ...

              As for impacts in general;

              Did a Comet Really Kill the Mammoths 12,900 Years Ago?
              Why did mammoths, mastodons, and other mega-beasts vanish from North America?

              Was it because:

              1) humans killed them;

              2) they couldn't hack the climate after the Ice Age ended; or

              3) an exploding comet ignited continent-wide wildfires, sent hundred-mile-an-hour winds and tornadoes howling across the land, and shattered the North American ice sheet, while also maybe gouging out the Great Lakes?

              Let's talk about option number three.

              The idea that a comet struck Earth 12,900 years ago, at the beginning of a strange interlude of climate cooling called the Younger Dryas was first proposed in 2007. In the bitter scientific debate that has flared sporadically ever since, the latest evidence includes:


              Comet may have exploded over Canada 12,900 years ago ...

              Ancient stone carvings confirm how comet struck Earth in ...

              List of impact craters on Earth - Wikipedia

              Massive crater under Greenland’s ice points to climate-altering impact in the time of humans
              What he brought home clinched the case for a grand discovery. Hidden beneath Hiawatha is a 31-kilometer-wide impact crater, big enough to swallow Washington, D.C., Kjr and 21 co-authors report today in a paper in Science Advances. The crater was left when an iron asteroid 1.5 kilometers across slammed into Earth, possibly within the past 100,000 years.

              Though not as cataclysmic as the dinosaur-killing Chicxulub impact, which carved out a 200-kilometer-wide crater in Mexico about 66 million years ago, the Hiawatha impactor, too, may have left an imprint on the planet's history. The timing is still up for debate, but some researchers on the discovery team believe the asteroid struck at a crucial moment: roughly 13,000 years ago, just as the world was thawing from the last ice age. That would mean it crashed into Earth when mammoths and other megafauna were in decline and people were spreading across North America.
              TANSTAAFL = There Ain't No Such Thing As A Free Lunch


              • A more recent addition jumping onto the bandwagon;
                TANSTAAFL = There Ain't No Such Thing As A Free Lunch


                • Massive asteroid will look like a slow-moving star during Earth flyby

                  The largest asteroid passing Earth in 2020 is set to zip by on April 29th, looking like a slow-moving star in the night sky through telescopes. The “potentially hazardous” asteroid will safely pass at a distance of 4 million miles.
                  TANSTAAFL = There Ain't No Such Thing As A Free Lunch


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