Either way, what does it matter. Does the sun being the center of the universe save lives? Does it help me get a job? Would it help prevent cancer?
Its the least of my worries.
God Bless
Actually, knowing the sun is the center of the universe helps us in many ways. It tells us of the special conditions on this earth. It tells us how unimaginably precious we must be, that of all this universe has, this tiny blue speck suspended in a sunbeam is precious to God, and the tinier specks that we are on it are the pinnacle of creation.
Many years ago, NASA launched the Voyager Probe. It was sent to the outskirts of the solar system. Before it left the orbit of Pluto, they turned the probe around and took a picture of earth as it appears from Pluto. The following image is what you would see if you looked toward the earth from the outermost planet in the solar system:
That arrow is pointing at a little bluedot. That dot is us. Our entire planet. Every saint, every sinner, every king and every peasant. Every great thinker and theologian, and every idiot and hater of God. Every person you have ever known and will know lives on that little mote of dust suspended in a sunbeam. To think that God created all of this. Every galaxy, every planet, every ridge of mountain.
Why is it important to know Astronomy? Because THAT is how BIG God is. God is so big that a universe that would take 93 billion years to travel across at the blistering speed of light is still smaller than Him.
Why is it important? Because it inspires us to view God as He IS, endlessly creative, infinitely knowledgeable, beautifully artistic and amazingly powerful.
For what better reason can we know?
Because the knowledge of how the universe works on a grand scale has inspired wonderful applications on earth. The laws of quantum physics, inspired by astronomy, are the reason you can have a computer more powerful than NASA had in the 1960s stuck in the pocket of your pants. It's the reason we can have computers that can do micro surgery, curing prostate cancer as an outpatient surgical procedure with little to no scarring.
If you need more reason to study astronomy than to have a life gazing in wonder at how God designed the universe, then you need to study it. Astronomy has helped us design so many amazing things, not just from the study itself, but from the development of technologies like Tempur, and many other things. Much of the safety features in your car were inspired by designs in the Space Shuttle.