All things are possible with God. Placing light in space presents no challenge at all. When He spoke light into existence, I don't confine Him to building a light source and waiting around for the light to overcome the darkness. He transcends time and space. Always has and always will.
That violates the physical laws that God created, and there is no evidence ever seen by anybody that God does such things, so I can't believe it.
Every miracle is a violation of physical laws. How do you explain the virgin birth (assuming you believe it) without violating physical laws?
Actually, I no longer believe it.
I have been convinced by people who believe as you that I must either accept fairy tale versions of how the universe was created and species developed that violate the evidence in hand, or I must reject the Bible and God. So I've rejected God.
This is the conundrum that Christians with your interpretation of Genesis have placed yourselves. Either I must reject massive amounts of evidence in multiple fields of science, or I must reject God.
This creates a Christian culture thats marginalized, consisting only of people with a certain ..... gullibility. I'm sure it makes it easy when the preacher asks for tithes, and makes for a tight group. But where Christianity used to be virtually universal in the American culture, (either believed outright, or at least had the respect of almost everyone) it is now an isolated, although large, group.