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Originally posted by Big-Brain
By the way, why doesn't Phoenix on Mars take pictures of stars?
Originally posted by weedwhackergeeze....no one seems to notice my earlier post, about the stars. They are REALLY, REALLY far away!!!!!!!
The Earth orbits the Sun....the diameter of that orbit is about 186,000,000 miles. Want to change that into km? Then just multiply by 1.6
What rubbish are you saying?
“The stars are really, really far away”. What would you want to say?
Originally posted by greshnik
Simple logic, mr. moderator: NASA has sent a bird to Mars. The author of this topic is saying that it never happened.
I can see the whole game clearly.
Originally posted by greshnikYour friend W Wacker (or whatever) claims that there were aliens on the Moon. And that is at SPACE EXPLORATION. Nobody warned him? Why?
Originally posted by weedwhacker
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The relative position of the stars, when seen from the Moon, are exactly the same as when viewed from Earth.
If it were possible to see a discernible change in the stars, then we'd see it every year as the Earth orbits the Sun. (hint....the stars are very, very far away...)
See, this is mostly for the OP of this thread....with his large brain and all...to figure out. See, the diameter of the Earth's orbit, at about 186,000,000 miles is nearly 750 times a larger distance from the Earth to the Moon. What possible good would it have been to take pictures of the stars?
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Reference system instrumentation
The establishment of reference coordinates is a problem that is not unique to space vehicles. However, the great distances and long durations of time over which the reference system of a space vehicle must be maintained lead to difficulties that do not occur in the case of aircraft.
Gyroscopes, which are merely elaborate spinning wheels, will maintain a fixed direction in space if they are not subjected to disturbances. In a practical case, however, it is just a question of time before the orientation of a gyro drifts away from the desired reference direction. The disturbing effects of high accelerations during launching, coupled with the relatively long duration of space flights, make it very difficult to establish a satisfactory preset reference system using gyros alone.
Instruments such as accelerometers or pendulums are of no use here. An accelerometer will always indicate zero in the weightless environment of a space vehicle, and a pendulum will simply assume any random position.
The stars provide a natural reference system which may be used in orienting a space vehicle. Star-tracking telescopes attached to the space vehicle can detect any disturbance of the attitude of the vehicle and signal operation of an appropriate torque-producing mechanism for correction.
Originally posted by Big-BrainHave NASA's frauds steered their rockets looking at the stars like Vikings when discovered America?
Originally posted by seagull
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You're not seeing much clearly at all, in truth. Using the pictures of tired astronauts as proof of their so called lying proves that rather conclusively.
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Originally posted by Big-BrainAs you can observe, Huygens had only a central rocket that could brake its velocity. This system makes the probe very unstable like Phoenix 12 rockets system.
As usually no video exist about Huygens tested on the earth.
Then, let us reason: if you must steer Cassini to Saturn at the distance of 1,500,000,000 km, you must see where it is as regards to Saturn.
Originally posted by apex
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Um, yeah, so why do you need to know or see where it is compared to Earth? Just work out the trajectory and launch it, and it gets there 8 years later (or whatever). You don't need to tell it too much, as it's all worked out and is basically unguided other than that.
Originally posted by Big-Brain
Originally posted by apex
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Um, yeah, so why do you need to know or see where it is compared to Earth? Just work out the trajectory and launch it, and it gets there 8 years later (or whatever). You don't need to tell it too much, as it's all worked out and is basically unguided other than that.
What biggest rubbish are you saying?
NASA's frauds must always cheat making things more and more complicated. They have not steered Cassini directly to Saturn as you, I and all the people have thought.
No, it would have been too “simple”.
Originally posted by apex
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Which is exactly what that image shows. Trajectories might be simple and parabolic in a nice, pretty much uniform gravitational field for a bullet on Earth, but in 3D space with large masses, it gets more complex. A trajectory using only rocket fuel for speed would need a huge rocket to reach Saturn, so gravitational slingshot has to be used.
Originally posted by Big-Brain
Explain in simple words how did NASA's frauds steer Cassini to Saturn making it follow this simple trajectory:
We are in 3D space, but NASA's frauds can maintain Cassini on a bidimensional plane and can steer their probe to a target 1,500,000,000 km distant and you believe in them.
Yesterday I was abducted by an alien, do you believe in me?