When astronomers use numbers in the billions and larger, it’s hard to find a frame of reference to compare it to. For example, our galaxy, the Milky Way, is described as having about 250 billion stars. What does that mean?
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When I was a kid, I lived in a small town that was more or less out in the middle of nowhere. Most businesses would close up around six (give or take), and most people stayed home. There were some streetlights, but not a lot. And at night, there were stars.
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The timeline for human life is finite. If we don’t kill ourselves off, or totally deplete our planet, then we have only about 2+ billion years to find a way to continue on with our species. That’s much shorter than is often thought, so we clearly must adjust our timetables for the need to develop a means to not only live outside our solar system, but our galaxy.
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