नेभिगेटर

गुरुत्वाकर्षण, केप्लर का नियम, कक्षीय तत्वहरू, गति, भाग्ने, रकेट समीकरण र कसरी स्पेसक्राफ्ट संसारहरू बीच यात्रा।

NASA/JPL/Space Science Institute

1
न्यूटनको गुरुत्व
- Newton's gravity · 12 मिनेट
  One law explains falling apples, the Moon's orbit and the path of every planet. Fire Newton's cannon and find out how.
2
केप्लरका नियम
- Kepler's laws · 14 मिनेट
  Three rules found from careful observations in the early 1600s still describe every orbit, from moons to exoplanets.
3
कक्ष तत्व
- Orbital elements · 14 मिनेट
  Six numbers pin down any orbit in space: its size, shape, tilt, orientation and where the body is on it.
4
कक्ष गति: भिस- भिभा समीकरण
- Orbital speed: the vis-viva equation · 12 मिनेट
  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
छिचोल्ने गति
- Escape velocity · 12 मिनेट
  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
किन एक कक्ष एक गिरावट हो
- Why an orbit is a fall · 10 मिनेट
  Astronauts float not because there is no gravity up there, but because they are falling all the time, and missing.
7
कक्षमा पुग्दै: गुरुत्वाकर्षण घुमाउनुहोस्
- Reaching orbit · 12 मिनेट
  Why rockets go up for only a few seconds, then spend ten minutes going sideways: the gravity turn, staging and orbital insertion.
8
रकेट समीकरण र डेल्टा-भी
- The rocket equation and delta-v · 12 मिनेट
  Why rockets are mostly fuel, why they come in stages, and the one equation behind every mission's budget.
9
होहमान स्थानान्तरणहरू
- Hohmann transfers: changing orbits · 12 मिनेट
  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
सञ्झ्याल सुरु गर्नुहोस्
- Launch windows: the road to Mars · 12 मिनेट
  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
कक्ष घुसाउनुहोस्: समात्दै
- Orbital insertion: getting captured · 12 मिनेट
  Arriving at a planet is the most dangerous minute of a mission: one burn decides whether you stay or fly past forever.
12
गुरुत्वाकर्षण सहयोग गर्दछ
- Gravity assists: the free slingshot · 12 मिनेट
  How Voyager, Cassini and New Horizons stole speed from planets, and why it never breaks the conservation of energy.
13
लाग्रेन्ज बिन्दु
- Lagrange points: balance in the sky · 11 मिनेट
  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
रेनडेभस र डकिङ
- Rendezvous: catching the space station · 11 मिनेट
  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
घर आउँदै: पुन: प्रविष्ट
- Coming home: reentry · 11 मिनेट
  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.
पोर्कचोप प्लोट

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ग्रहिका र पुच्छ्रेतारा

छिटो आउँदैछ

उपकरण र पाठहरू मात्र सिक्ने लागि सरलीकृत मोडेल प्रयोग गर्नुहोस्। तिनीहरूले नेभिगेसनको लागि प्रयोग गरिनु हुँदैन, मिशन योजना वा कुनै पनि सञ्चालन निर्णय। प्रमाणपत्रहरू निःशुल्क र गैर-अधिकृत छन्। शैक्षिक सामग्रीको खण्डन पढ्नुहोस्

नेभिगेटर

न्यूटनको गुरुत्व

केप्लरका नियम

कक्ष तत्व

कक्ष गति: भिस- भिभा समीकरण

छिचोल्ने गति

किन एक कक्ष एक गिरावट हो

कक्षमा पुग्दै: गुरुत्वाकर्षण घुमाउनुहोस्

रकेट समीकरण र डेल्टा-भी

होहमान स्थानान्तरणहरू

सञ्झ्याल सुरु गर्नुहोस्

कक्ष घुसाउनुहोस्: समात्दै

गुरुत्वाकर्षण सहयोग गर्दछ

लाग्रेन्ज बिन्दु

रेनडेभस र डकिङ

घर आउँदै: पुन: प्रविष्ट

पोर्कचोप प्लोट

ग्रहिका र पुच्छ्रेतारा