Re: Basic space physics question: propulsion speed limit
Newtonian physics give reasonably accurate results as long as you think of the space craft as the frame of reference. The problem arises if you think with respect to the starting point or the destination or a star about 13.7 billion light years away which is receding at 0.999c To reach 0.9991 c (with respect to that star) takes extreme amounts of fuel even if you are at zero speed with respect to Earth's poles.
The other problem is, if you need one ton of fuel to increase your speed by one kilometer per second, you need 100,000 tons of fuel to reach 1/3 the speed of light. Since you have to carry the fuel from the beginning, the fuel better be antimatter, or the one ton was not realistic. Neil
I hope I can explain this correctly. The faster that you go you would think that the energy needed would be less due to the fact that the interaction between electromagnetism and magnetism and the other forces that combine to create gravity would be less the farther away from a planet that you went. We know that gravity creates atomic weight based on the amount of electrons present that assist in trapping the various wavelengths that a planet creates. The more electrons present means the heavier the atom becomes unless my reasoning based upon the table of elements is wrong then having fewer electrons would mean fewer wavelengths would be trapped between the electrons and nucleus thus creating a lighter element.
I do not follow the idea that gravity is present everywhere in the Universe. I believe that gravity is generated or created by the various energetic properties of atoms combined into a larger object such as an asteroid, planet or sun. When the atoms of such objects covalently or atomically bond to one another each bond adds to the overall gravitational field strength. The more atoms and molecules that combine together creates a gravitational field around the object where different order's of gravity will be present that would be relative to the elemental composition of each element. The larger the object the greater the range of it's gravitational influence is upon the bodies that are present within the objects gravitational sphere of influence which all of the objects inside of the gravitational sphere of influence with theirself produce or generate their own gravitational sphere of influence. The smaller objects would then be effected upon by the larger objects gravitational sphere of influence thus causing movement.
As a rocket goes faster and faster into the sky the rocket is occupying more space at one time than it would be if it was at rest mass.The interaction between the objects (Earth) gravitational field and the elements of the rockets design are at an equilibrium or a position where both influences from the rockets design elements and the planets gravitational field are equal to one another. This would mean that the rocket is not placing a force against the planets gravitational field but the planets gravitational field is placing a force against the rockets design elements.
Once the rocket's engines fire the rockets design elements are occupying more space than it would be if the rocket was at rest meaning that more of the sub components that gravity consists of are interacting with the rockets design elements at a faster rate which creates more atomic weight. This means that the rocket would require more thrust to break the interaction between the planets gravity and the rockets design elements. Once an equilibriated state between the two interactions has been achieved the rocket can propel itself into space.
In space however and the farther away from a planet that you travel the less gravity is present. Similar to how if you hold up a candle in a darkened room that is filled with fog you can see the layers of intensity that the candle produces as well as being able to feel the heat of the candle. The farther away from the candle that you travel the less prevelant the light and warmth is which in this case would represent gravity with the flame being the center of Earths core.
So inside of a solar system traveling to ftl might not be possible because of the suns gravitational field creating a weight upon the ship in the same manner that Earth's gravitational field exerts it's force upon the rocket as it leaves the planet.
But outside of the solar system where the effect of the sun's gravity lessens that farther you travel away from the solar system the less gravity there is present to create a occupying force of gravity upon the ship.
Occupying force of gravity means the faster you go the more gravity that you encounter which increases the weight of the ship based upon the gravities interaction with the rockets design elements.
So once outside of the solar system it might be possible to travel faster than the speed of light due to the fact that blackholes are able to pull a light photon into it's maul. This would supercede the fact that the speed of light is the fastest attainable speed in the Universe for the simple fact that if the speed of light was the fastest speed attainable then the light photon would not be affected by the gravity of the blackhole. But since even light cannot escape a blackhole would mean that the gavity of the blackhole is functioning at a faster rate of velocity than the light photon is or faster than the speed of light.
If the gravity of the blackhole was being generated at light speed and the light photon passed through the blackhole's gravity field then both energetic processes would equilibirate to each other allowing the light photon to pass through the field without being effeected. But since the gravity of the blackhole pulls the light photon into the blackhole's maul then the rate at which the gravity wavelength of the blackhole is being generated at and occupies space would be faster than the the speed of light.
Remember the occupying force of gravity? In this instance our rocket is the light photon and the planet is the blackhole. The light photon has more gravity occupying the interior of the photon in the same manner that the planets gravity creates more weight upon the rocket's design elements which creates weight the faster that the rocket travels.
So in order for the light photon to escape the pull of a blackhole the light photon would need to travel faster than the ability of the blackhole's gravitational wavelengths would be able to occupy it's interior mass.Which means that the gravity of a blackhole functions at a velocity faster than the speed of light and would also mean that there would a force in the Universe that would be able to travel faster than the speed of the gravity of a blackhole otherwise the entire Universe would be pulling in on the center of the Universe where the largest blackhole is thought to exist instead of expanding outwards.
You have to remember that Einstein's theories revolved around energetic actions that occured within the sphere of Earth or inside the sphere of gravity.
Another way to look at what I am trying to explain is by thinking of gravity as an egg. Inside if the egg shell you have cells that grow larger and larger until the cells form a chick. The chick then has to use a certain amount of force to break through the shells barrier. Once broken through the chick is now able to fly at a faster rate of velocity than it could when it was still inside of the egg.
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