And God said, “Let there be lights in the expanse of the sky to separate the day from the night, and let them serve as signs to mark seasons and days and years, and let them be lights in the expanse of the sky to give light on the earth.” And it was so. God made two great lights—the greater light to govern the day and the lesser light to govern the night. He also made the stars. God set them in the expanse of the sky to give light on the earth, to govern the day and the night, and to separate light from darkness. And God saw that it was good. And there was evening, and there was morning—the fourth day. Genesis 1:14-19

Whether we use scientific methods or simply faith to understand the creation of the universe, the answer will come out the same—God.

The solar system is expanding as Einstein proved with his General Theory of Relativity and it is readily accepted by all scientists. Like a pebble dropped in water, the ripple effects expand outward as long as the energy sustains and nothing stops its progress. So if the universe is expanding, what initiated its expansion?

Every effect needs a cause. The universe could not spring from nothing. Something had to cause it. Science shows that something started the universe and the ripple effects are still seen today. The question—what started it all?

Two colliding atoms cannot explain the beginning of the universe. Where did those atoms come from? Something had to exist outside of time, space, matter to kick start our known world.
Logic points to God. Reason points to God. Science points to God.  God has made himself plain in creation.

The wrath of God is being revealed from heaven against all the godlessness and wickedness of men who suppress the truth by their wickedness, since what may be known about God is plain to them, because God has made it plain to them. For since the creation of the world God’s invisible qualities—his eternal power and divine nature—have been clearly seen, being understood from what has been made, so that men are without excuse.  Romans 1:18-20

God is not threatened by science. He uses science. He can use it to lead people to faith or to strengthen our faith. The problem occurs when people put their faith in science and try to disprove God.  Creation is God's best witness.