Where is God?

On the web I saw where a person professed they couldn't believe in God, because we've explored galaxies and haven't seen any evidence of God. Surely if God exists, we would have seen Him by now.

I believe this person is sincere, but they're sincerely wrong. Lets look at what they've said; "we've explored galaxies". They used the plural, but we'll stick with one for now. We live on the Earth. The Earth is in the Milky Way galaxy. According to NASA, the Milky Way galaxy is between 100,000 and 180,000 light years in diameter. We'll go with the smaller number.

We're familiar with throwing around terms like "light year" without giving it careful thought. A light year is the distance light can travel in a single year. Light travels at about 670 million miles per hour. Our modern spacecrafts, the things we shoot at Mars and other places in the solar system, travel at about thirty thousand miles per hour. That's after they clear the Earth's gravitational pull and start traveling across space. 670,000,000 miles per hours is 22,333 times as fast as 30,000 miles per hour. That means today's modern spacecraft, assuming it didn't run out of fuel, would take 22 thousand times as long as light to cross the Milky Way. 100,000 times 22,333 is 2,233,300,000. So, it would take over 2.2 billion years just to cross the Milky Way galaxy. Not to explore it, just cross it. Forget about the fact that the Wright Brothers are credited with inventing an airplane in 1903. The United States is less than 250 years old. What country was launching spacecraft capable of exploring the galaxy 2.2 billion years ago? The answer is none.

I believe web guy sat in class and listened so whatever his teacher said without thinking it through. However long later, he's here posting is scholarly enlightenment on the web.