And God said, “Let there be lights in the expanse of the heavens to separate the day from the night. And let them be for signs and for seasons, and for days and years, and let them be lights in the expanse of the heavens to give light upon the earth.” And it was so. And God made the two great lights—the greater light to rule the day and the lesser light to rule the night—and the stars. And God set them in the expanse of the heavens to give light on the earth, to rule over the day and over the night, and to separate the light from the darkness. And God saw that it was good. And there was evening and there was morning, the fourth day.
Genesis 1:14-19, English Standard Version
Note that the sun and the moon is the focus of the fourth day of creation. In comparison, the trillions of stars, collected into galaxies, are an afterthought.
Why?
Because the sun and the moon directly shape our lives: the sun for everyone, and the moon (and sun!) for time measurement.
The moon (and, to a lesser extent, the sun) also create tides, which shape the oceans… and the fishermen and transports, animals and plants, all of whom which rely on reliable tides.
The stars also provide assistance for time measurement and navigation. But, to a lesser extent, compared to the sun and moon.
I doubt if we will reach the stars before the end of time in this cosmos. The Kingdom of God is likely to cover and dominate the world of men — say, in the next thousand years — long before any colony ship we can send will arrive at another star. And when all the nations bend the knee to Christ, and uphold His laws, then the end of the age will be at hand, the Final Judgement will be upheld, and the New Heavens and the New Earth will replace the old one.
Acrosss the Stars 