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  • Originally posted by G David Bock View Post
    Taking a suggestion from another thread, here's one addressing the issue of potential impact by large objects, asteroids/comets with effects upon Earth and methods to mitigate/prevent. For background material, some links:

    This one has a lot of imbedded links dealing with varied aspects;
    http://abob.libs.uga.edu/bobk/

    One from a classic researcher and author on the topic;Comets and the Bronze Age Collapse by Bob Kobres
    http://abob.libs.uga.edu/bobk/bronze.html
    (Interesting illustrations hinting at origin of swastika symbol.)

    Two movies of recent times addressed this issue. "Armageddon" was a Bruce Willis 'space cowboys' adventure and entertaining sort of flick. "Deep Impact" was a more realistic and pragmatic treatment. Both came out about the same time (hmmm )
    This link is a bit lengthy and delves into what some might consider tangental topics, I'm presenting it for it's portion concerning the Taurid Meteor Stream (Comet Encke). This is a debris stream of an object that may have broken up, Comet Shumacker-Levi 9 like, near Mars, about 20-40,000 years ago, remaining debris orbiting the Sun in a @3.3 year path which Earth crosses thru twice each year.

    One crossing occurs about late June-early July, the stream coming from the Sun's direction, hence a "daytime" display, and the Tunguska blast of 1908 is believed to be caused by an object in this stream. The other crossing occurs in the first couple of weeks of November and is from the direction of the outer Solar System, hence a night-time display. Note that prior to calender change of about 15 days that occurred in last few centuries, the end of the transit would have coincided with the end of October, and may hint at origins of Halloween.
    http://www.enterprisemission.com/oh_my_god.htm
    Yes,, this is the OP and perhaps time for a refresher, plus want to add a couple links on the Taurids and Comet Encke;
    https://en.wikipedia.org/wiki/Taurids
    https://en.wikipedia.org/wiki/Comet_Encke

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    • Scientists develop mini Death Star to protect us from asteroids

      American researchers believe laser beam could be used to deflect space rocks on collision course with planet Earth

      http://www.telegraph.co.uk/news/scie...asteroids.html

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      • What we would actually do to stop a 'doomsday' asteroid

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        • The Billionaire and the Doomsday Dust-up

          Some interesting comments on the nature of the risk as well.

          In a recent paper, Myhrvold charges that NASA scientists have made some serious errors in calculating the size and properties of the asteroids that come dangerously close to our planet. The specific details are fairly technical (you can read a semi-popular summary of his argument here in PDF form), but the upshot is plain enough. If the estimated asteroid sizes are wrong, so are the associated dangers posed by these objects. That would raise a whole new level of uncertainty around a type of natural disaster that is already the subject of highly polarized hype and dismissals.
          http://blogs.discovermagazine.com/ou.../#.V1N3SBEpDbU
          Any metaphor will tear if stretched over too much reality.

          Questions about our site? See the FAQ.

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          • The sky is falling, The sky is falling...

            We're all gonna die, why worry about when.
            Credo quia absurdum.


            Quantum mechanics describes nature as absurd from the point of view of common sense. And yet it fully agrees with experiment. So I hope you can accept nature as She is - absurd! - Richard Feynman

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            • Pending another thread to place this in;

              Plan to Turn Asteroids Into Spaceships Could Spur Off-Earth Mining
              http://www.space.com/33079-turning-a...-in-space.html

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              • Rather than a new thread, this interesting development regards comets ...
                Rosetta's missing Philae probe found in dark crack on comet

                High-resolution cameras on the European Space Agency's (ESA) Rosetta spacecraft have found space probe Philae, which landed on a comet nearly two years ago only to lose power because its solar-driven batteries were in the shade.Images taken from Rosetta at a distance of 2.7 km (1.7 miles) showed Philae wedged into a dark crack on Comet 67P/Churyumov–Gerasimenko, the ESA said on Monday.
                ...
                http://www.msn.com/en-us/news/world/...eA3?li=BBnbfcL

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                • Two undetected close fly-bys within a month!

                  This most recent was closest at about 24,800 miles, just a bit beyond geo-synchronus orbit. Too bad we aren't in a position to nudge this into GEO when it came by, even if we knew it was coming.

                  Second Asteroid In A Month Sails By Without Us Detecting It First

                  http://www.msn.com/en-us/weather/top...4Vx?li=BBnb7Kz

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                  • Incoming! How NASA and FEMA Would Respond to an Asteroid Threat
                    EXCERPT:
                    ...
                    NASA and the Federal Emergency Management Agency (FEMA) came together Oct. 25 to plan a response to such a hypothetical event. In a "tabletop exercise," a kind of ongoing simulation, the two agencies tested how they would work together to evaluate the threat, prevent panic and protect as many people as possible from the deadly collision.

                    "It's not a matter of if, but when, we will deal with such a situation," Thomas Zurbuchen, NASA's Science Mission Directorate's new associate administrator, said in a statement. "But unlike any other time in our history, we now have the ability to respond to an impact threat through continued observations, predictions, response planning and mitigation."
                    ...
                    http://www.space.com/34629-nasa-fema...pact-test.html

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                    • Hopefully a long time before we see one like this, excerpt;
                      ...
                      The reconstruction of the event 66 million years ago was made possible by drilling into the remnant bowl and analysing its rocks.
                      These show how the space impactor made the hard surface of the planet slosh back and forth like a fluid.
                      At one stage, a mountain higher than Everest was thrown up before collapsing back into a smaller range of peaks.
                      "And this all happens on the scale of minutes, which is quite amazing," Prof Joanna Morgan from Imperial College London, UK, told BBC News.
                      ...
                      http://www.bbc.com/news/science-environment-38019604

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                      • Looks like a big one from long ago ...

                        Satellite spots MASSIVE object hidden under the frozen wastes of Antarctica
                        Scientists baffled by bizarre observations of gigantic 'anomaly' buried beneath polar icecap

                        EXCERPTS:
                        It stretches for a distance of 151 miles across and has a maximum depth of about 848 metres.

                        Some researchers believe it is the remains of a truly massive asteroid which was more than twice the size of the Chicxulub space rock which wiped out the dinosaurs.

                        If this explanation is true, it could mean this killer asteroid caused the Permian–Triassic extinction event which killed 96 percent of Earth’s sea creatures and up to 70 percent of the vertebrate organisms living on land.
                        ...
                        This “Wilkes Land gravity anomaly” was first uncovered in 2006, when NASA satellites spotted gravitational changes which indicated the presence of a huge object sitting in the middle of a 300 mile wide impact crater.
                        ...
                        "This Wilkes Land impact is much bigger than the impact that killed the dinosaurs, and probably would have caused catastrophic damage at the time," said Ralph von Frese, who was a professor of geological sciences at Ohio State University when he discovered the "killer crater" on 2006.

                        "All the environmental changes that would have resulted from the impact would have created a highly caustic environment that was really hard to endure. So it makes sense that a lot of life went extinct at that time."
                        ...
                        https://www.thesun.co.uk/news/248944...of-antarctica/

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                        • Another one slipped by;
                          Sneaky asteroid spotted whizzing between Earth and moon
                          A space rock large enough to do damage gives us a near miss just two days after being discovered.
                          https://www.cnet.com/news/asteroid-2...th-moon-slooh/

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                          • Originally posted by Bwaha View Post
                            The sky is falling, The sky is falling...

                            We're all gonna die, why worry about when.
                            Why not? I've got a bottle of very good Scotch I would like to drink before I die.
                            Quis Custodiet Ipsos Custodes? Who is watching the watchers?

                            Comment


                            • Originally posted by Mountain Man View Post
                              Why not? I've got a bottle of very good Scotch I would like to drink before I die.
                              Why wait? As some say getter done now...
                              Credo quia absurdum.


                              Quantum mechanics describes nature as absurd from the point of view of common sense. And yet it fully agrees with experiment. So I hope you can accept nature as She is - absurd! - Richard Feynman

                              Comment


                              • Originally posted by Bwaha View Post
                                Why wait? As some say getter done now...
                                I'm hoping for a little advanced warning so I can enjoy it knowing there won't be anything as good ever again, instead of wasting it on a perfectly ordinary day.
                                Quis Custodiet Ipsos Custodes? Who is watching the watchers?

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