I don't see how this follows. The Bible says nothing about the Western Hemisphere, and yet we can't infer that intelligent life doesn't exist here.
There are even huge amounts of things that Jesus said and did, that are not mentioned in the Bible. So many things, St. John says, that if they were all written, the earth could not hold all the books.
Some Bible scholars interpret null and void, not as if there’s nothing there, but what the earth was originally before God worked on it, an ice ball or a planet like Venus.
It’s possible that Moses, in vision, was standing on the Earth when it looked more like Venus and wrote down what he saw as God did His work.
For example, when God cleared the clouds and let the sun and stars lights finally shine through, to Moses that may have looked like God created them right then, when it was simply that they were not visible on the Earth until then.