Regarding your scientifc argument against the idea presented by galveston.
Firstly, your assertion that triangulation is impossible is plainly false. Stellar parallax were first calculated by Friedrich Bessel in 1838 and with the planned GAIA and SIM missions, distances of up to 100 000 lightyears will be accurately determined.
Parallax
Limits to Parallax
Secondly, the redshift of a star is easily determined by observing the absorption lines in the optical spectrum of the star. This is then used to correct the colour of the star and therefore establish its temperature.
Redshift
Thirdly, your assertion about dust implies that scientists cannot determine that there is any dust between us and the star we are looking at. This is plainly false as dust clouds can easily be detected. They are called Nebulae.
Nebula
Fourthly, galveston made a poor choice using 10 000 light years as his example. This is too close to 6000 which leads to the impression that maybe inaccuracies in calculations can account for this. In reality the size of the universe is estimated by scientists to be over 14 billion (14 000 million) light years. This is over 200 000 000 % more that 6000. Surely you are not suggesting that scientists could be this far out in their calculations?!
Finally all of the above is academic given that there is one undeniable and irrefutable proof that the universe is far bigger than 6000 light years suggested by YEC. SN 1987A was a supernova in the outskirts of the Tarantula Nebula in the Large Magellanic Cloud, a nearby dwarf galaxy which was observed on February 23, 1987. There was nothing unusual about the supernova until about 8 months later when the expanding shockwave of light hit rings of gas surrounding it causing the rings to glow.
Given that scientists know exactly how long it took for the light to reach the gas rings and can measure the rings' angular size accurately, simple triangulation is possible which places SN1987A 168,000 light-years away!
SN1987A
This leaves only the Biblical argument that God made the light from a distant star appear instantaneously, but even this argument is seriously flawed!
Once again, let us consider SN1987A. According to YEC the star that became SN1987A was created 6000 years ago. Tj3 suggests that God made the light from this star instantly appear to be visible on Earth. To do this God must have created a light wave 168,000 light-years long stretching from Earth all the way back to the star in the Large Magellanic Cloud.
Now let us ‘freeze’ this light wave at the moment of its creation so as to enable us to look more closely at it. Starting from the Earth’s end imagine travelling two light days along this wave away from the Earth. At this point in space we see the light that Adam would see when he was created two days later.
Continuing along the wave we travel a further 1700 light years. At this point in space we see the light that Noah would see sometime after the Flood. Travelling a further 2300 light years we reach the point in space where the light that Mary would see the night Jesus was born, is found.
Another 1987 light years along this path we reach a point in space where the light no longer is that of a star but of a supernova. This is the light that astronomers saw on February 23, 1987. A further 8 light months along this path we reach the point where the light now shows three rings around the supernova suddenly brighten. A further 22 light years along brings us to the place where the light we see today is.
So far we have travelled only along 6000 light years out of the 168,000 light years to where the star is so let us continue right to the end of this light wave and travel 168,000 light years from Earth. What do we find at this point in space? Nothing! The star is not here. The supernova is not here! At this place is the light that will reach the Earth in 162,000 AD, and by that time the rings will have expanded greatly away from this point.
What does this all mean? It means that the star never existed in the first place as too the supernova. All of what we are seeing never happened!! God did not create the star, but merely the phantom of a star.
Psalm 19.1: The heavens declare the glory of God; the skies proclaim the work of his hands.
What glory is there for God who doesn’t create the real thing but only an imaginary one?
Either God is a trickster who deceives his creation or He did not instantaneously create the light from distant stars to be visible on Earth.