But the beauty of it is that the universe doesn't just extend outwards, it extends inwards as well. Maybe the earth seems like a relative speck of dust when we look out into the vastness of space, but that is because we can see farther outwards than we can see inwards -- in the end, though, size is completely irrelevant. Each cell in our bodies is as significant as we are, and we are just as significant as each sprawling, wonderous galaxy that we've glimpsed in space.

It's a notion that is both incredibly humbling and equally aggrandizing all at once.