إعـــــــلان

تقليص
لا يوجد إعلان حتى الآن.

مركبة فوياجر تجاوزت المجموعه الشمسية

تقليص
X
 
  • تصفية - فلترة
  • الوقت
  • عرض
إلغاء تحديد الكل
مشاركات جديدة

  • مركبة فوياجر تجاوزت المجموعه الشمسية

    Voyager 1 has left the solar system


    Voyager 1 appears to have at long last left our solar system and entered interstellar space, says a University of Maryland-led team of researchers.
    Carrying Earthly greetings on a gold plated phonograph record and still-operational scientific instruments – including the Low Energy Charged Particle detector designed, built and overseen, in part, by UMD’s Space Physics Group – NASA’s Voyager 1 has traveled farther from Earth than any other human-made object. And now, these researchers say, it has begun the first exploration of our galaxy beyond the Sun’s influence.The spacecraft Voyager 1 appears to have left the heliosphere, according to a new study. Credit: NASA
    “It’s a somewhat controversial view, but we think Voyager has finally left the Solar System, and is truly beginning its travels through the Milky Way,” says UMD research scientist Marc Swisdak, lead author of a new paper published online this week in The Astrophysical Journal Letters. Swisdak and fellow plasma physicists James F. Drake, also of the University of Maryland, and Merav Opher of Boston University have constructed a model of the outer edge of the Solar System that fits recent observations, both expected and unexpected.Their model indicates Voyager 1 actually entered interstellar space a little more than a year ago, a finding directly counter to recent papers by NASA and other scientists suggesting the spacecraft was still in a fuzzily-defined transition zone between the Sun’s sphere of influence and the rest of the galaxy.But why the controversy?At issue is what the boundary-crossing should look like to Earth-bound observers 11 billion miles (18 billion kilometers) away. The Sun’s envelope, known as the heliosphere, is relatively well-understood as the region of space dominated by the magnetic field and charged particles emanating from our star. The heliopause transition zone is both of unknown structure and location. According to conventional wisdom, we’ll know we’ve passed through this mysterious boundary when we stop seeing solar particles and start seeing galactic particles, and we also detect a change in the prevailing direction of the local magnetic field.NASA scientists recently reported that last summer, after eight years of travel through the outermost layer of the heliosphere, Voyager 1 recorded “multiple crossings of a boundary unlike anything previously observed.” Successive dips in, and subsequent recovery of, solar particle counts caught researchers’ attention. The dips in solar particle counts corresponded with abrupt increases in galactic electrons and protons. Within a month, solar particle counts disappeared, and only galactic particle counts remained. Yet Voyager 1 observed no change in the direction of the magnetic field.To explain this unexpected observation, many scientists theorize that Voyager 1 has entered a “heliosheath depletion region,” but that the probe is still within the confines of the heliosphere.Swisdak and colleagues, who are not part of the Voyager 1 mission science teams, say there is another explanation.In previous work, Swisdak and Drake have focused on magnetic reconnection, or the breaking and reconfiguring of close and oppositely-directed magnetic field lines. It’s the phenomenon suspected to lurk at the heart of solar flares, coronal mass ejections and many of the sun’s other dramatic, high-energy events. The UMD researchers argue that magnetic reconnection is also key to understanding NASA’s surprising data.Though often depicted as a bubble encasing the heliosphere and its contents, the heliopause is not a surface neatly separating “outside” and “inside.” In fact, Swisdak, Drake and Opher assert that the heliopause is both porous to certain particles and layered with complex magnetic structure. Here, magnetic reconnection produces a complex set of nested magnetic “islands,” self-contained loops which spontaneously arise in a magnetic field due to a fundamental instability. Interstellar plasma can penetrate into the heliosphere along reconnected field lines, and galactic cosmic rays and solar particles mix vigorously.Most interestingly, drops in solar particle counts and surges in galactic particle counts can occur across “slopes” in the magnetic field, which emanate from reconnection sites, while the magnetic field direction itself remains unchanged. This model explains observed phenomena from last summer, and Swisdak and his colleagues suggest that Voyager 1 actually crossed the heliopause on July 27, 2012.In a NASA statement, Ed Stone, Voyager project scientist and a professor of physics of the California Institute of Technology, says, in part, “Other models envision the interstellar magnetic field draped around our solar bubble and predict that the direction of the interstellar magnetic field is different from the solar magnetic field inside. By that interpretation, Voyager 1 would still be inside our solar bubble. The fine-scale magnetic connection model [of Swisdak and colleagues] will become part of the discussion among scientists as they try to reconcile what may be happening on a fine scale with what happens on a larger scale.” Read the full NASA Voyager statement here: http://www.nasa.gov/mission_pages/vo...r20130815.htmlVoyager Interstellar MissionIn the 36th year after their 1977 launches, the twin Voyager 1 and 2 spacecraft continue exploring where nothing from Earth has flown before. Their primary mission was the exploration of Jupiter and Saturn. After making a string of discoveries there — such as active volcanoes on Jupiter’s moon Io and intricacies of Saturn’s rings — the mission was extended. Voyager 2 went on to explore Uranus and Neptune, and is still the only spacecraft to have visited those outer planets. The current mission for both spacecraft, the Voyager Interstellar Mission, is to explore the outermost edge of the Sun’s domain and beyond. Both Voyagers are capable of returning scientific data from a full range of instruments, with adequate electrical power and attitude control propellant to keep operating until 2020. Voyager 2 is expected to enter interstellar space a few years after its twin. The Voyager spacecraft were

  • #2
    رد: مربكة فوياجر تجاوزت المجموعه الشمسية

    Voyager 1 appears to have at long last left our solar system and entered interstellar space, says a University of Maryland-led team of researchers. Stay up to date on EarthSky.

    تعليق


    • #3
      رد: مربكة فوياجر تجاوزت المجموعه الشمسية

      كوكب الارض كما يبدو من حافة المجموعه الشمسية كنقطة زرقاء .سبحان الله

      تعليق


      • #4
        رد: مربكة فوياجر تجاوزت المجموعه الشمسية

        Voyager 1 الان سيحاول اجابة بعض الاسئله عن حقيقة ال Solar Magnetic Field، اهم اكتشاف كما يبدو ان ال magnetic Field ليس مجرد بالونه حول الشمس بل ان بعض البروتونات تخرج من هذه القوقعه.

        اذا كان هذا صحيح اذا حتى في ال Magnetic Field للبشر ليس مجرد قوقعه و هذا يعني انه هناك Static Energy Loss للبشر ايضا.

        تعليق


        • #5
          رد: مربكة فوياجر تجاوزت المجموعه الشمسية

          المشاركة الأصلية بواسطة Mosamania مشاهدة المشاركة
          Voyager 1 الان سيحاول اجابة بعض الاسئله عن حقيقة ال Solar Magnetic Field، اهم اكتشاف كما يبدو ان ال magnetic Field ليس مجرد بالونه حول الشمس بل ان بعض البروتونات تخرج من هذه القوقعه.

          اذا كان هذا صحيح اذا حتى في ال Magnetic Field للبشر ليس مجرد قوقعه و هذا يعني انه هناك Static Energy Loss للبشر ايضا.


          هل توضح أخي المشاركة بالتفصيل لكي تتضح الصورة ..

          تعليق


          • #6
            رد: مربكة فوياجر تجاوزت المجموعه الشمسية

            المشاركة الأصلية بواسطة مردقوش مشاهدة المشاركة
            هل توضح أخي المشاركة بالتفصيل لكي تتضح الصورة ..
            كل جسم له Magnetic field تتناسب طرديا مع كتلته. يعني حنى انت الإنسان في جاذبيه حولك. الشمس بسبب كتلتها الهائلة جداً لها جاذبيه قويه لدرجة ان صخيرات كونيه ايضا تسمى بالكواكب تدور في مدار جاذبيه حولها.

            دراسة الفويجار تكذب نظرية قديمه هو ان ال Magnetic field أو الحقل المغناطيسي حول الشمس ليس مجرد قوقعه كما كنا نظن في السابق من دراساتنا لحقول مغناطيسية و جاذبية في جسيمات أصغر. يعني انه هناك بعض البروتونات اللي تزوغ من القوقعه هذي. يعني انت حولك بروتونات و اليكترونات تخرج منك بشكل مستمر. يعني انه هناك طاقه تخرج منك أو حولك خارج نطاق حقبة المغناطيسي و جاذبيتك الذاتيه.

            و لو استدللنا بالنظرية الخيطية للذرات هذا يعني انه هناك Constant Cosmic Release من الذرات اللتي تكون كيانك. يعني بمعنى آخر انه هناك جزء كان يوم من الأيام جزء منك و كيانك الآن طائر في الفضاء في رحله باسمك خاصه تستكشف الكون عنك. فهمت دحين؟؟

            تعليق


            • #7
              رد: مركبة فوياجر تجاوزت المجموعه الشمسية


              تعليق

              ما الذي يحدث

              تقليص

              المتواجدون الآن 1. الأعضاء 0 والزوار 1.

              أكبر تواجد بالمنتدى كان 182,482, 05-21-2024 الساعة 06:44.

              من نحن

              الامن الوطني العربي نافذة تطل على كل ما يتعلق بالعالم العربي من تطورات واحداث لها ارتباط مباشر بالمخاطر التي تتهددنا امنيا، ثقافيا، اجتماعيا واقتصاديا... 

              تواصلوا معنا

              للتواصل مع ادارة موقع الامن الوطني العربي

              editor@nsaforum.com

              لاعلاناتكم

              لاعلاناتكم على موقع الامن الوطني نرجو التواصل مع شركة كايلين ميديا الوكيل الحصري لموقعنا

              editor@nsaforum.com

              يعمل...
              X