@SeanO Yes! Besides the travel of starlight is the wording of Genesis 1. Verse 1 says that God created the Heavens and the Earth, so the already existed when God said let there be light. If Earth already existed when light was created, then it would appear that God made the sun after the Earth. The sun is created on day 4 aacording to OEC, but astronomy tells us that the sun existed long before the Earth. If we also think about how plants appeared before the sun on day 3, then photosynthesis existed before the sun. God is light, but if God said let there be light, and we argue that this light (God himself) was able to do photosynthesis, we are saying that God created himself or that he decided to start shining, which doesn’t make much sense. If we use the hebrew word for day “yom” and translate it as an era (which is one of its definitions) much more makes sense. Genesis 1:1 states that the Earth was without form and void after God created it, it already existed when God said let there be light. Now, in astronomy, stars form when dust clouds begin to fuse as atoms collide due to their own gravity. So, God created the Earth, and there was still a large dust cloud (also, hydrogen cloud) so thick that light could not pass. In time, it would dissipate and let sunshine pass through. That is the light. Then we eliminate the problem of photosynthesis.
Regarding creation day 4, the Earth had lots of CO2, and after plants were created they cleaned the atmosphere, allowing the view of the sun, moon, and stars.
This theory is a longshot, but it does eliminate many problems with science. What we can only know for sure is that God created everything. How he did it is just brainstorming for ideas, as we may never find out how he did it exactly.