Навигатор

1. 1

   Ньютоны таталцал

   • Newton's gravity · 12 минут

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

2. 2

   Кеплерийн хуулиуд

   • Kepler's laws · 14 минут

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

3. 3

   Орбитын элементүүд

   • Orbital elements · 14 минут

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

4. 4

   Орбитын хурд: vis- viva тэнцэл

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

     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. 5

   Хугацаа

   • Escape velocity · 12 минут

     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. 6

   Яагаад орбит нь унах ёстой вэ

   • Why an orbit is a fall · 10 минут

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

7. 7

   Орбитт хүрэх: гравитаци эргэлт

   • Reaching orbit · 12 минут

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

8. 8

   Рокетийн тэнцэл ба дельта- v

   • The rocket equation and delta-v · 12 минут

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

9. 9

   Хоманн шилжүүлэг

   • Hohmann transfers: changing orbits · 12 минут

     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. 10

    Товчооны цонх

    • Launch windows: the road to Mars · 12 минут

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

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    Орбитын оруулалт:

    • Orbital insertion: getting captured · 12 минут

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

12. 12

    Гравитацийн тусламж

    • Gravity assists: the free slingshot · 12 минут

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

13. 13

    Лагранжийн цэгүүд

    • Lagrange points: balance in the sky · 11 минут

      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. 14

    Зөвлөгөө болон холболт

    • Rendezvous: catching the space station · 11 минут

      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. 15

    Буцах: дахин нэвтрэх

    • Coming home: reentry · 11 минут

      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. 16

    Хоолны газрын зураг

    Удахгүй

17. 17

    Астероидууд ба оддын систем

    Удахгүй

Тоног төхөөрөмж болон хичээлүүд нь зөвхөн сурах зорилгоор хялбаршуулсан загваруудыг ашигладаг. Тэднийг замын хөдөлгөөн, үүргийн төлөвлөлт эсвэл үйл ажиллагааны шийдвэр гаргахад ашиглаж болохгүй. Сертификатууд үнэгүй бөгөөд баталгаажаагүй байдаг. Сургалтын агуулгаас зайлсхийх тухай мэдээллийг уншина уу