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Showing posts from December, 2017
Observation is science, Research? mmm not sure.
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The beauty in a RADAR lies in the fact that it is able to determine speed plus position.
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If orbital motion is around the sun " easterly", then it it Direct. Otherwise it is Retrograde
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Orbital Elements: 6 measures that describe size, shape, orientation of an orbit,and to pin pointing position of satellite @ certain time.
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Each object in orbit belongs a "coordinate system".
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Sphere influence is there for everybody and once we cross this sphere Edge then Escape happens.
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Interplanetary probes sent from Earth travel hyperbolic paths relative to earth, this is needed to keep speed leftover after leaving earth.
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Escape speed is the necessary speed to overcome gravitational forces
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Speed with certain direction is called velocity, the greater the radius the less speed is needed to keep a satellite in this orbit.
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To put a satellite into an orbit it is necessary to reach a certain speed, horizontal Direction at the desired altitude.
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The period of an elliptical orbit depends ONLY on the size of the semi-major Axis (different than radius)
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Orbits of all planets in solar system (including earth) are ellipses(closed curve) and turning around it takes time called The period.
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All parabolas have eccentricity of 1 but an orbit whose eccentricity is 1 need to be parabola - it could be a degenerate conic.
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The type of the conic orbit (circle, ellipse, parabolic or hyperbolic) is determined by the satellite Energy (negative, zero or positive)
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The energy of a satellite in orbit remains constant ( neither increasing nor decreasing) as a result of its motion.
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Orbiting is a small object going around a very much larger object.
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Science that challenges human thinking rather than stimulating it is “fictional”
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Rocket science has a mother it is called the “forces of the other”
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