ପଥପ୍ରଦର୍ଶକ

1. 1

   ନ୍ୟୁଟନ ଗ୍ରହଣଶକ୍ତି

   • Newton's gravity · 12 ମିନିଟ

     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

   କେପଲର ନିୟମଗୁଡିକ

   • Kepler's laws · 14 ମିନିଟ

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

3. 3

   ଗ୍ରହର ତତ୍ତ୍ୱଗୁଡିକ

   • Orbital elements · 14 ମିନିଟ

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

4. 4

   କକ୍ଷୀୟ ବେଗ: vis- viva ସମୀକରଣ

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

     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

   ପଳାୟନ ବେଗ

   • Escape velocity · 12 ମିନିଟ

     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

   ଏକ କକ୍ଷପଥ କାହିଁକି ପଡ଼ିଯାଏ

   • Why an orbit is a fall · 10 ମିନିଟ

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

7. 7

   କକ୍ଷପଥରେ ପହଞ୍ଚିବା: ଗୁରୁତ୍ଵ ବଳ ପରିବର୍ତ୍ତନ

   • Reaching orbit · 12 ମିନିଟ

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

8. 8

   ରକେଟର ସମୀକରଣ ଏବଂ ଡେଲଟା-ଭି

   • The rocket equation and delta-v · 12 ମିନିଟ

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

9. 9

   ହୋମ୍ୟାନ ସ୍ଥାନାନ୍ତରଣ

   • Hohmann transfers: changing orbits · 12 ମିନିଟ

     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

    ୱିଣ୍ଡୋ ଆରମ୍ଭ କରନ୍ତୁ

    • Launch windows: the road to Mars · 12 ମିନିଟ

      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. 11

    ଗ୍ରହାଣୁ ଭର୍ତ୍ତିକରନ୍ତୁ: ଗ୍ରହଣ କରାଯାଉଛି

    • Orbital insertion: getting captured · 12 ମିନିଟ

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

12. 12

    ଗ୍ରହଣୀୟତା ସହାୟତା

    • Gravity assists: the free slingshot · 12 ମିନିଟ

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

13. 13

    ଲଗାଙ୍ଗେ ବିନ୍ଦୁଗୁଡିକ

    • Lagrange points: balance in the sky · 11 ମିନିଟ

      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

    ରେଣ୍ଡୁଅସ ଏବଂ ଡକିଂ

    • Rendezvous: catching the space station · 11 ମିନିଟ

      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

    ଘରକୁ ଫେରୁଛି: ପୁନଃପ୍ରବେଶ

    • Coming home: reentry · 11 ମିନିଟ

      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

    Porkchop ପ୍ଲୋଟଗୁଡ଼ିକ

    ଖୁବଶୀଘ୍ର

17. 17

    ଗ୍ରହାଣୁ ଏବଂ ଧୂମકેତୁ

    ଖୁବଶୀଘ୍ର

ସାଧନ ଏବଂ ପାଠଗୁଡ଼ିକ କେବଳ ଶିକ୍ଷାର୍ଥୀମାନଙ୍କ ପାଇଁ ସରଳ ନମୁନା ବ୍ୟବହାର କରିଥାଏ। ଏହାକୁ ନେଭିଗେସନ, ମିଶନ ଯୋଜନା କିମ୍ବା କୌଣସି କାର୍ଯ୍ୟକାରୀ ନିଷ୍ପତ୍ତି ପାଇଁ ବ୍ୟବହାର କରାଯାଇପାରିବ ନାହିଁ। ପ୍ରମାଣପତ୍ରଗୁଡ଼ିକ ମୁକ୍ତ ଏବଂ ଅଣ-ସଂସ୍ଥାଗତ। ଶିକ୍ଷାଗତ ବିଷୟବସ୍ତୁ ନିଷେଧ ପଢନ୍ତୁ