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«Роскосмос» создает орбитальную АЭС

Фев 17, 2018 в Статьи | 59 коммент.

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Госкорпорация «Роскосмос» заказала разработку «орбитальной АЭС», способной в космосе передавать энергию с помощью лазерного луча для подзарядки других спутников. Техническое задание на соответствующую научно-исследовательскую работу получило конструкторское бюро «Арсенал». В прошлом году другое предприятие отрасли — ракетно-космическая корпорация «Энергия» — успешно провело наземный эксперимент по передаче энергии лазером на расстояние 1,5 км.

«Для определения вариантов проектного облика космического комплекса и обеспечения возможности его поэтапного создания допускается рассматривать уровни выходной электрической мощности ядерной энергоустановки от 100 кВт до 1000 кВт», — говорится в задании.

Разработчик должен до конца ноября 2018 года представить «Роскосмосу» возможный облик и основные характеристики спутника, варианты его размещения на различных орбитах, схемы выведения в космос, вопросы обеспечения безопасности в случае нештатных ситуаций.



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  2. Gravity is a force between two masses, so gravity exists wherever there is mass. To discover when gravity started to exist, we need to understand what mass is, and when it started to exist.

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    Very nearly everything you encounter in everyday life counts as “matter”: a book, a glass of water, a bird – anything you might also call “stuff”.

    There are some exceptions: for example, neither light nor sound is matter, nor are feelings. Light can even travel through completely empty space, where there’s no matter at all.

    If a feather and a football are both made of matter, you might wonder why they’re so different. Well, a football has much more matter than a feather, so we’d say its “mass” is higher.

    On the other hand, a kilogram of feathers and a kilogram of iron have the same mass because they weigh the same – even though the feathers take up a lot more space.

    If you could count every particle in your body, then you could add up all of their masses and you would have a measure of your own mass.

    Mass, weight and gravity
    Of course, that isn’t how we actually measure masses in real life. Here on Earth, we measure mass via weight. Mass and weight are not quite the same thing, but they are related.

    If you took a scale to the moon and weighed yourself on it, the number it showed would be smaller than when you weighed yourself on the Earth – even though your mass is still the same, your weight would change. This is because the scale you use is actually not measuring your mass directly, but rather the gravitational force your mass is feeling from the Earth, or the moon.

    How strong gravity is depends on the mass of both objects, as well as the distance between them. Because the Earth has a lot more mass than the moon, the force of gravity you experience on Earth is stronger. That’s why you weigh more on Earth than on the moon.

    A cosmic creation
    So, when did mass first appear? Based on our best understanding of the physics of the universe, the first mass was created in the form of tiny particles (a LOT of them) right after the beginning of the universe itself, about 13.7 billion years ago.

    The creation of matter happened so fast after the creation of the universe that you could fit more than a million of those instants in the time it takes to blink an eye. And from that moment, gravity was at work, pulling matter together, gathering atoms and molecules into dense clouds that eventually formed stars and galaxies and planets.

    Of course, there are many forces in nature, and gravity is only one of them. The other forces work on matter too, so there has always been a cosmic dance between the different forces in the universe, which makes it look how it does.

    Gravity might be the force that we’re all most familiar with because we all have felt it since the moment we were born, but actually compared to many of the other forces it’s not especially strong.

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    But since gravity is found anywhere there is mass, it’s basically everywhere, at all times.

    The same gravity that keeps you on the ground here on Earth also holds the Earth together, holds the Earth in orbit around the sun, and holds the sun in orbit around the rest of the galaxy.

    Gravity has existed for as long as the universe has, and it will keep existing, for as long as we do, and beyond.

  3. Notable quotes on the Apollo 11 moon landing:

    «I believe this nation should commit itself to achieving the goal, before the decade is out, of landing a man on the moon and returning him safely to Earth.» — President John F. Kennedy in special State of the Union message on May 25, 1961.

    «Twelve, 11, 10, 9, ignition sequence start. Six, 5, 4, 3, 2, 1, zero, all engine running. Liftoff! We have a liftoff, 32 minutes past the hour. Liftoff on Apollo 11.» — Jack King, NASA’s «voice of launch control.» He later said he was so excited that he said «engine» instead of «engines.»

    «Houston, Tranquility Base here. The Eagle has landed.» — NASA astronaut Neil Armstrong after landing on the moon July 20, 1969.

    «That’s one small step for man, one giant leap for mankind.» — Armstrong as he stepped onto the moon. He later said he meant to say «for a man.»

    «Beautiful, beautiful. Magnificent desolation.» — NASA astronaut Buzz Aldrin as he followed Armstrong onto the moon’s surface.

    «For one priceless moment in the whole history of man, all the people on this Earth are truly one.» President Richard Nixon, in telephone call to Armstrong and Aldrin while they were on the moon.

    «Here men from the planet Earth first set foot upon the moon. July 1969 A.D. We came in peace for all mankind.» — plaque on lunar module.

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