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Some stars are millions of light-years away. Since a light-year is the distance traveled by light in one year, does this mean that the universe is very old?
Despite all the biblical and scientific evidence for a young earth/universe, this has long been a problem. However, any scientific understanding of origins will always have opportunities for research -- problems that need to be solved. We can never have complete knowledge and so there will always be things to learn.

One explanation used in the past was rather complex, involving light travelling along Riemannian surfaces (an abstract mathematical form of space). Apart from being hard to understand, it appears that such an explanation is not valid, since it would mean that we should see duplicates of everything.

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Perhaps the most commonly used explanation is that God created light "on its way," so that Adam could see the stars immediately without having to wait years for the light from even the closest ones to reach the earth. While we should not limit the power of God, this has some rather immense difficulties.

zeppscommentaries.com...&E/gods_and_suns.htm
The Old Testament, written at least 2,500 years ago, refers to the stars.

Which means that light from the stars was reaching earth 2,500 years ago, only 3,500 years after the creation of the earth.

Which means that no star in the universe can be more than 3,500 years old, because the light from a star more than 3,500 light years away wouldn’t have reached us yet when the old Testament was written. In fact, the stars had been around for some time at that point, since the bible makes it clear that they existed for the purpose of keeping track of holidays and seasons.

Now, we know that the earth is in a galaxy called the Milky Way, and that this galaxy contains at least 200 billion stars. It may contain as many as 400 billion. The number is big enough that they are still simply counting.

So even if we ignore the fact that we can plainly see other galaxies, which obviously lie outside of our own, it means that a creationist cosmology has anywhere from 3 to 6 stars jammed in each cubic light year of the universe.

Four hundred billion stars all within 3,500 light years would give us a night sky that is blinding pure white. And it would have meant no fourth day of creation, since the earth would have been fried to a crisp.

I am not a Young-Earth Creationist still a Creationist none-the-less and i'm familiar with the arguments,...so i'll give it a go.

from your first linkPerhaps the most commonly used explanation is that God created light "on its way,"

I agree that the idea of light created in "transit" is a cop-out. But there are other explanations(still YEC tho) like the decay of the

Recall that the speed of light cannot change without destroying the very structure of the universe. So as we examine distant objects, we quickly realize that we are seeing objects as they were millions of years ago. As we examine more and more distant objects, parallax becomes more difficult to measure, so we must employ additional methods to determine ages (however, satellites and Very Long Baseline Array measurements have extended the effective range and accuracy of parallax measurements5). The objects in space we observe at billions of light-years away are one of the strongest evidences against a young universe. Young-earth creationists have completely failed to come up with an alternative explanation that has withstood even simple testing.

Originally posted by jake1997
Try this one

www.answersingenesis.org...

The usefulness of parallax in measuring distance to stars is limited because the parallax angle of even nearby stars is extremely small. The largest trigonometric parallax, for the nearest star other than the Sun, is less than one arc second (0.772”).

In addition, the atmosphere “blurs” stellar images, making measurement of small angles very difficult. In practice, for Earth based telescopes, the limit is about 0.01”, with the result that parallax is good only for the relatively small number of stars up to about 100 pc away. For stars more than 100 pc away the parallax angle becomes too small to measure accurately from the ground.

Other less direct methods must then be used for determining the distances to celestial objects which are more than 100 pc away. However parallax measurements of nearby stars are still vital as they indirectly underpin many of the less direct techniques for measuring distance to remote celestial objects.

Calculating the age of the universe is only accurate if the assumptions built into the models being used are also accurate. This is referred to as strong priors and essentially involves stripping the potential errors in other parts of the model to render the accuracy of actual observational data directly into the concluded result. Although this is not a totally invalid procedure in certain contexts, it should be noted that the caveat, "based on the fact we have assumed the underlying model we used is correct", then the age given is thus accurate to the specified error (since this error represents the error in the instrument used to gather the raw data input into the model).