ھن سائيٽ تي ڪجھ ٻوليون مشين ترجمو ٿي سگهي ٿو ۽ غلطيون شامل ڪري سگھن ٿا. ان کي بهتر ڪرڻ ۾ مدد ڏيو انگريزي اصل پڙهو
  1. سکيو
ڪُجھه ڄاڻڻ وارا نوجوان ۽ وڏا

لڏپلاڻ

جاذبي، ڪيپلر جا قانون، مداري عنصر، رفتار، ڦرڻ، راڪيٽ جي معادلي ۽ فضائي جهاز دنيان جي وچ ۾ ڪيئن سفر ڪن ٿا.

NASA/JPL/Space Science Institute

  1. نيوٽن جي گرانشي

    • Newton's gravity · 12 منٽ

      One law explains falling apples, the Moon's orbit and the path of every planet. Fire Newton's cannon and find out how.

  2. ڪيپلر جا قانون

    • Kepler's laws · 14 منٽ

      Three rules found from careful observations in the early 1600s still describe every orbit, from moons to exoplanets.

  3. عنصر

    • Orbital elements · 14 منٽ

      Six numbers pin down any orbit in space: its size, shape, tilt, orientation and where the body is on it.

  4. مداري رفتار: vis- viva مساوات

    • Orbital speed: the vis-viva equation · 12 منٽ

      One short equation gives the speed of anything in orbit at any point, if you know how far it is and the size of its orbit.

  5. ٻاھر نڪرڻ جي رفتار

    • Escape velocity · 12 منٽ

      How fast do you need to go to leave a world for good? And why rockets do not actually need to reach it at the surface.

  6. ڇو هڪ مدار هڪ ڦاٽڻ آهي

    • Why an orbit is a fall · 10 منٽ

      Astronauts float not because there is no gravity up there, but because they are falling all the time, and missing.

  7. مدار کي پھچڻ: ڌماڪي جو موڙ

    • Reaching orbit · 12 منٽ

      Why rockets go up for only a few seconds, then spend ten minutes going sideways: the gravity turn, staging and orbital insertion.

  8. راڪيٽ جي معادلي ۽ delta-v

    • The rocket equation and delta-v · 12 منٽ

      Why rockets are mostly fuel, why they come in stages, and the one equation behind every mission's budget.

  9. منتقلي

    • Hohmann transfers: changing orbits · 12 منٽ

      To go higher you speed up, and then you arrive slower. The two-burn manoeuvre that moves satellites from low orbit to geostationary orbit.

  10. وڏا ونڊوز

    • Launch windows: the road to Mars · 12 منٽ

      You cannot aim at Mars, only at where Mars will be in eight months. Why Mars missions leave every 26 months, all at once.

  11. مداري داخلا: ورتو وڃي ٿو

    • Orbital insertion: getting captured · 12 منٽ

      Arriving at a planet is the most dangerous minute of a mission: one burn decides whether you stay or fly past forever.

  12. مرڪب

    • Gravity assists: the free slingshot · 12 منٽ

      How Voyager, Cassini and New Horizons stole speed from planets, and why it never breaks the conservation of energy.

  13. لاگرنج نقطا

    • Lagrange points: balance in the sky · 11 منٽ

      Five places around every pair of worlds where a spacecraft can ride along for free, and why the James Webb Space Telescope lives at one of them.

  14. رينڊووز ۽ ڊڪنگ

    • Rendezvous: catching the space station · 11 منٽ

      To catch something ahead of you in orbit, you drop lower and go slower-looking but faster. The counter-intuitive art of meeting in space.

  15. گھر موٽڻ: وري داخل ٿيڻ

    • Coming home: reentry · 11 منٽ

      A small push slows a spacecraft by a hundred metres per second, and the air takes care of the other 7.8 kilometres per second, as a fireball.

  16. Porkchop پليٽس

    جلد ئي

  17. ڦيٿي ۽ چنڊ

    جلد ئي

اوزار ۽ سکيا صرف سکڻ لاءِ آسان ماڊل استعمال ڪندا آھن. انھن کي ھلائڻ، ميشن منصوبابندي يا ڪنھن به آپريشنل فيصلي لاءِ استعمال نه ڪجي. سرٽيفڪيٽ مفت آھن ۽ غير تصديق ٿيل آھن. تعليمي مواد جي ذميواري کان انڪار پڙهو