No sorry, that is not what astronomy says. There was a starting point, but it contained the entire universe. Earth is no more in the centre than the distant galaxies we see. If we lived there we would see the same expansion if the universe going on around us as we see from earth
Unfortunately, when we think of stretched, we think of rubber bands, but they did not have rubber bands back then and they didn't use the word stretch that way. You stretch out you hand, but it doesn't mean it is getting any bigger, and from a quick search, that is the most common use of the word stretch in the OT. In this context the word is also used for pitching a tent. You don't make the fabric of the text bigger, that is not what the word is talking about, but spreading the fabric over the ground you are camping on. Again if we look at the parallelism in Isaiah 40:22 this is exactly what is be described:
who stretches out the heavens like a curtain,
and spreads them like a tent to dwell in;
We didn't find out stars are millions even billions of light years away until the 20th century, never mind find out that the more distant stars are the faster they are flying away from us. The bible speaks of the stars as a mystery, God created them, God knows them all, but the people writing the bible could not even count how many there are. We still can't, but the point is the bible was written in the context of people who did not understand astronomy, who admit they don't understand astronomy, (though they know someone who does). In this context we need to understand what stretching out the heavens, or spreading it like a tent, would have meant to people who did not think in terms of modern astronomy as we do.