This is like saying:
"We used to think the letters in books were black, but now we know that we are seeing the light reflect off of the white pages."
In other words, your statement presumes that God could not have made the stars since they are made out of a combination of gases. What the hell would the stars need to be made out of if God made them?
<sarcasm> oh no, these stars are made out of gas combos. they can't be made by God!! Everyone knows God only makes stars out of dipply kra-flog </sarcasm>