With our eyes, we can see the sky above us and the grass below. If we want to explore the depths of our universe, our eyes let us see a few thousand stars, the sun, our moon, and (on a really clear night) a few planets that orbit in our solar system. That’s it. That’s our entire universe. Or at least, it was.
Technology has allowed us to go above and beyond the bounds of our senses and peer through the cosmos in a much more meaningful way. It has transformed our little universe, which seemed to house just a few thousand stars, into an unending cosmic sea that is populated by trillions upon trillions of stars.
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