Àtòjọ-ẹ̀yàn

Ìgbánú, àwọn ìṣẹ̀ Kepler, àwọn eroja orítọ́lì, àwọn ìhàn-ìpa, àwọn ẹ̀yàn rókìtì atí bí a ṣe lè gbéró nínú aye.

NASA/JPL/Space Science Institute

1
Ìṣàfarawé àwọn ìṣàmúlò-ètò
- Newton's gravity · 12 àwọn ìṣìsẹ̀
  One law explains falling apples, the Moon's orbit and the path of every planet. Fire Newton's cannon and find out how.
2
Àwọn ààyè-iṣẹ́ Kepler
- Kepler's laws · 14 àwọn ìṣìsẹ̀
  Three rules found from careful observations in the early 1600s still describe every orbit, from moons to exoplanets.
3
Àwọn àmì-ìwé
- Orbital elements · 14 àwọn ìṣìsẹ̀
  Six numbers pin down any orbit in space: its size, shape, tilt, orientation and where the body is on it.
4
Àwọn ìṣàfarawé àgbéwọlé
- Orbital speed: the vis-viva equation · 12 àwọn ìṣìsẹ̀
  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
Ìjánu-ìró
- Escape velocity · 12 àwọn ìṣìsẹ̀
  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
Kini idi ti orbiti jẹ́ afẹ̀jú
- Why an orbit is a fall · 10 àwọn ìṣìsẹ̀
  Astronauts float not because there is no gravity up there, but because they are falling all the time, and missing.
7
Àwọn ààyè-iṣẹ́
- Reaching orbit · 12 àwọn ìṣìsẹ̀
  Why rockets go up for only a few seconds, then spend ten minutes going sideways: the gravity turn, staging and orbital insertion.
8
Àwọn ìṣàfarawé àti delta-v
- The rocket equation and delta-v · 12 àwọn ìṣìsẹ̀
  Why rockets are mostly fuel, why they come in stages, and the one equation behind every mission's budget.
9
Àwọn ìjánu-ìṣàfilọ́lẹ̀ Hohmann
- Hohmann transfers: changing orbits · 12 àwọn ìṣìsẹ̀
  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
Ṣí fèrèsé
- Launch windows: the road to Mars · 12 àwọn ìṣìsẹ̀
  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
Àwọn ààyè-iṣẹ́ ìṣàfarawé kọ̀ǹpútà
- Orbital insertion: getting captured · 12 àwọn ìṣìsẹ̀
  Arriving at a planet is the most dangerous minute of a mission: one burn decides whether you stay or fly past forever.
12
Àwọn ìrànwọ́ Gravity
- Gravity assists: the free slingshot · 12 àwọn ìṣìsẹ̀
  How Voyager, Cassini and New Horizons stole speed from planets, and why it never breaks the conservation of energy.
13
Àwọn ìtàn Lagrange
- Lagrange points: balance in the sky · 11 àwọn ìṣìsẹ̀
  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
Àwọn àgbékalẹ̀ àti ìjánu-ìwé-iṣẹ́
- Rendezvous: catching the space station · 11 àwọn ìṣìsẹ̀
  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
Tí a bà lọ sí ile:
- Coming home: reentry · 11 àwọn ìṣìsẹ̀
  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.
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Àwọn ìrànwọ́ àti àkọlé lòòlù àwọn módè́ì tí a fi pamọ́ fún ìmọ̀. Kò yẹ ki wọn lò fún ìṣàfihàn, ìṣàmúlò-ètò àti àwọn ìṣẹ̀dá iṣẹ́. Àwọn ìwé-ẹ̀rì ní ọ̀fẹ̀ àti àwọn ààyè-iṣẹ́ kò ní ìgbà gbà. Ka àwọn ìṣàmúlò-ètò ìròyìn

Àtòjọ-ẹ̀yàn

Ìṣàfarawé àwọn ìṣàmúlò-ètò

Àwọn ààyè-iṣẹ́ Kepler

Àwọn àmì-ìwé

Àwọn ìṣàfarawé àgbéwọlé

Ìjánu-ìró

Kini idi ti orbiti jẹ́ afẹ̀jú

Àwọn ààyè-iṣẹ́

Àwọn ìṣàfarawé àti delta-v

Àwọn ìjánu-ìṣàfilọ́lẹ̀ Hohmann

Ṣí fèrèsé

Àwọn ààyè-iṣẹ́ ìṣàfarawé kọ̀ǹpútà

Àwọn ìrànwọ́ Gravity

Àwọn ìtàn Lagrange

Àwọn àgbékalẹ̀ àti ìjánu-ìwé-iṣẹ́

Tí a bà lọ sí ile:

Àwọn ààyè-iṣẹ́ Porkchop

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