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  • what is a near earth object?(n.e.o.)

    What is a Near Earth Object?

    A Near Earth Object is a fragment of rock and ice hurtling through space that passes dangerously close to Earth. It can be an asteroid or a comet, vast or tiny. These constantly bombard the Earth, every day. Shooting stars are caused by asteroids burning up in Earth's atmosphere. This is what destroys most of these, but occasionally one is large enough or moving at such a terrifying speed that it collides with the Earth's surface, with massive destructive potential.
    Attached Files
    mr. poop chute banger says....
    Homeland Security Advisory System
    http://www.dhs.gov/xinfoshare/progra...ease_0046.shtm
    is wrestling fake?
    http://www.wimp.com/fake/

  • #2
    What damage could they cause?

    A NEO does not need to be large to devastate. One the size of a small garage would annihilate a large city. One big enough to leave a 10km crater, still nowhere near the size of the biggest (there is a 300km crater on Earth), would have the destructive force of every one of the world's 10,000 nuclear warhead combined.



    The one that wiped out the dinosaurs was several kilometres across. (roughly 1 1/2 mile long)
    mr. poop chute banger says....
    Homeland Security Advisory System
    http://www.dhs.gov/xinfoshare/progra...ease_0046.shtm
    is wrestling fake?
    http://www.wimp.com/fake/

    Comment


    • #3
      When have they hit before?

      The most famous example of the sheer power of NEO's was the extinction of the dinosaurs. To do this a large meteor, several kilometres across, would be required. Comets imprinted the face on the moon, which are clearly visible from 240,000 miles away. Earth will have sustained many more collisions than this, but erosion here is much greater, masking the destruction caused by these in the past.
      mr. poop chute banger says....
      Homeland Security Advisory System
      http://www.dhs.gov/xinfoshare/progra...ease_0046.shtm
      is wrestling fake?
      http://www.wimp.com/fake/

      Comment


      • #4
        where are u gettin this stuff, I want to read more :D
        "Say what you will about the sweet miracle of unquestioning faith, I consider a capacity for it terrifying and absolutely vile."
        - Kurt Vonnegut

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        • #5
          What would happen during a large collision?

          In 1994 a large comet (P/Shoemaker-Levy 9) hit Jupiter. The Hubble telescope recorded the impact with terrifying accuracy. As it entered the atmosphere of Jupiter temperatures reached 20,000 degrees. The impact sent a fireball thousands of kilometres into space. [Image compliments of the-planet-jupiter.com. A magnificent artist rendering of Soemaker-Levy 9 breaking up, and impacting into Jupiter] The scale of the impact may look small in scale, but bear in mind the size differential between Jupiter and Earth.

          The damage of such an impact on Earth could kill all life. Huge earthquakes would streak around the globe at thousands of kilometres an hour, destroying all in their path. It would also trigger volcanic eruptions all over the world. A huge dust cloud would be sent into the atmosphere. Gasses released into the atmosphere would cause intensely acidic rain and destroy the ozone layer. A vast fireball would be sent into the sky. However devastating these would be, the real danger would be from the dust clouds sent into the atmosphere. The amount of debris released into the upper atmosphere would block out the sun, trigger a nuclear winter and potentially kill all life on Earth.
          Attached Files
          mr. poop chute banger says....
          Homeland Security Advisory System
          http://www.dhs.gov/xinfoshare/progra...ease_0046.shtm
          is wrestling fake?
          http://www.wimp.com/fake/

          Comment


          • #6
            What about smaller impacts?

            In 540AD, chronicles record the impact of a comet. They say that the 'whole sky seemed on fire' and that there were 'battles in the air'. One chillingly reports that 'real blood dropped from the clouds and dreadful mortality ensued'. These ominous words are backed up by evidence. Tree rings show how much a tree grew in each year, indicating the conditions at the time. In the years after 540AD these rings are remarkably close together, indicating stunted growth caused by a dramatically cold period. This was the result of the impact. But this was just its effect on trees - all over the world such an impact would have caused the famine, crop failures and plague outbreaks that occurred at that time. And this was only a small impact.

            This may sound like the distant past but in only 1908 an asteroid with a 80m diameter smashed into the forests of Tunguska, Siberia. A fireball exploded into the sky with the force of 200 atomic bombs. The blast was heard 1000km away. Millions of tonnes of dust were blasted into the atmosphere. For 2,000 square kilometres trees were flattened. Fortunately Tunguska is virtually unpopulated but the area destroyed is that of size of a large city - the casualties of such a meteor in an urban area are horrific.
            mr. poop chute banger says....
            Homeland Security Advisory System
            http://www.dhs.gov/xinfoshare/progra...ease_0046.shtm
            is wrestling fake?
            http://www.wimp.com/fake/

            Comment


            • #7
              How many are there?

              We simply so not know. The largest yet discovered are an awesome 25 kilometres in length. Scientists estimate that there are around 1000 asteroids larger than 2km that pass close to Earth. An impact by any one of these would be an Extinction Level Event. Just as terrifyingly, there are more than a million bigger than 50metres across - each capable of destroying a city.

              How likely is an impact?

              Impacts on this scale occur alarmingly often. An impact similar to the one at Tunguska occurs approximately once per hundred years. Slightly smaller ones, but easily big enough to devastate a city, occur at least 5 times per century, for example Brazil in 1930. Not all these will hit the Siberian wilderness or Brazilian rainforest - sooner or later one will hit a major urban area. Just as bad, one could fall in the sea and trigger a mega-Tsunami.
              Those large enough to cause extinction, 2km in diameter, occur more rarely - approximately once per million years. This sounds to unlikely to be scared about? Scientists estimate that you stand a 1/20,000 chance of being killed by a meteor - much more likely than being winning much on the lottery.

              No large NEO yet discovered is on course for earth - but the total world wide effort searching is just 100 people.
              mr. poop chute banger says....
              Homeland Security Advisory System
              http://www.dhs.gov/xinfoshare/progra...ease_0046.shtm
              is wrestling fake?
              http://www.wimp.com/fake/

              Comment


              • #8
                How can we stop them?

                If we discovered a NEO was on course for Earth we would have only three options. We could try to destroy the asteroid with high yield nuclear weapons. This would be extremely risky as without detailed knowledge of the structure of the NEO, no one could tell how much it would take to destroy it. Also, there is the risk of incompletely destroying the asteroid. This would results in many small NEOs. Not only would these be much harder to stop, but they could also cause far more damage as the whole of the Earth's surface could suffer impacts.

                The second option is to try to deflect the NEO. The most essential requirement for this is time, as the deflection required is inversely proportional to the time available. However, only small adjustments to the course of the asteroid or comet would be needed to make it miss Earth. The object could be diverted using nuclear weapons or placing 'mass drivers' on the object which, fuelled by substance on the asteroid, could divert its course.

                The third is to try to prepare for the impact. Ground zero - the area of impact - would have to be evacuated. This area could be vast with a large NEO. Nuclear winter would mean that natural food sources would be unavailable for at least a year, the surface of the planet would be inhospitable for an extended period and most infrastructure would be destroyed, delaying a return to civilization.
                Attached Files
                mr. poop chute banger says....
                Homeland Security Advisory System
                http://www.dhs.gov/xinfoshare/progra...ease_0046.shtm
                is wrestling fake?
                http://www.wimp.com/fake/

                Comment


                • #9
                  Damn, one the size of a samll garage could destroy an entire city? How does that work out, my assumption it travels parallel to the ground at a pretty low height or does it hit perpendicullarly and the impact of it fucks shit up?

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                  • #10
                    well u gotta remember physics,when a something in motion stays in motion until it hits something,say like for instance,the rock has kinetic energy cuz its in motion and the city has potential motion,cuz its at rest,follow me
                    so learning from that,these rocks are parts of planets or comets or maybe came from the asteroid belt itself,the earth rotates at roughly 22,500 mph and its spinning so fast you can't even feel it,so when something thats moving at a higher rate of speed collides with a stationary object such as earth either bounces off the earth atmoshere like back in 1998 when we had a close call or it penetrates to atmoshere because of the angle of the earth at the time of entry,impact zones for anything bigger than a small car is not where u wanna be when it hits,but personally,i'd rather have an impact in the water than on land,cuz atleast with the water impact,u can move inland a couple hundred miles and be outside the danger zones and wait for the water to recede,and if it hits land,not even bacteria is safe
                    mr. poop chute banger says....
                    Homeland Security Advisory System
                    http://www.dhs.gov/xinfoshare/progra...ease_0046.shtm
                    is wrestling fake?
                    http://www.wimp.com/fake/

                    Comment


                    • #11
                      Trying to deflect it seems like the best option. Attempting to destroy it like you said would just cause a bunch of smaller NEO's. It would be rather dificult to prepare for impact, seeing that it would cause huge panick attacks, making it nearly impossible to prepare. Rather the best plan I can see is to deflect it, but most importantly is to keep it under wraps until after they have succeeded if they ever release it publicly in the first place. That would one of those cases where what we don't know wont hurt us. Unless ofcourse they fail, inturn we all die. But if it can't be avoided, I'd rather not know about it. I wouldn't want my last moments or years, however long it is goin to take for the NEO to stike the earth from the point in which they inform us, spent worrying.
                      "It's every man's dream to have a penis so large that he must hire a small boy to carry it."
                      "Nothing is foolproof to a sufficiently talented fool."

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                      • #12
                        me 2,i wanna live happy myself,i wanna know,but then again i don't wanna know,so instead of 1 solid hit,it turns into a point blank shotgun blast and thats worse,hopefully they could deflect it deep in outer space,but in order for that to happen,we need years to study and prep time and make sure that the object got to be far away from earth so that we don't poison ourselves from the radiation blast,cuz that would just be plain stupid
                        mr. poop chute banger says....
                        Homeland Security Advisory System
                        http://www.dhs.gov/xinfoshare/progra...ease_0046.shtm
                        is wrestling fake?
                        http://www.wimp.com/fake/

                        Comment


                        • #13
                          do any of y'all think theres a planet equivelent to earth in teh universe that we'll one day find and human's can travel to that planet b4 the earth drowns or ice's over or gets blown up?

                          Do any of y'all believe in E.T's?
                          think we could ever get on with E.T's without being closed minded?

                          Do you think there are E.T's here on earth?
                          Mystery
                          Another Fallen Soldier
                          ~Rest In Piece Marvin, Mark, Leona, Proof & Kasey J~

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                          • #14
                            2:-|2
                            "Fuck Love"


                            SICK SYMPHONIES

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                            • #15
                              Originally posted by Mystery
                              do any of y'all think theres a planet equivelent to earth in teh universe that we'll one day find and human's can travel to that planet b4 the earth drowns or ice's over or gets blown up?

                              Do any of y'all believe in E.T's?
                              think we could ever get on with E.T's without being closed minded?

                              Do you think there are E.T's here on earth?
                              hell we go e.t. in this thread,but i'm more of realistic person but also a spectic,so basically i'm my own biggest hypocrit,i can't say i believe in extra-tresstrials,but come on,out of billions of galaxies,i'd be a fool to think that we are the only one's alive,see if u become an astromer and one nite u find a lil blue planet roughly 8 millions miles from the nearest star that rotates and has water an oxygen,u just found our sister planet,
                              but also remember this,the stars we see at nite in the sky is really the light wave that took millions of years to reach us,u never even know if the star has exploded or not,the closest galaxy is 4 lite yrs away and we'd never make it there,but its good to see some of u care about things around u and not just eminem
                              mr. poop chute banger says....
                              Homeland Security Advisory System
                              http://www.dhs.gov/xinfoshare/progra...ease_0046.shtm
                              is wrestling fake?
                              http://www.wimp.com/fake/

                              Comment

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