One Buddhist perspective to see is that the whole of reality, all time and space ... is manifested in a grain of sand ... and all of the universe is held on the tip of each blade of grass.
So. do not be so quick to judge either a grain as "big" or "small" ... a blade as "tall" or "short" or finite ... or the universe as vast and distant ... for to do so is perhaps as a value judgment in saying how "small and insignificant" we must be, not much different from ancient man's subjective judgment in asserting how "grand" we are, that we are at the heart of it all, the universe spinning around us, the "center of creation".
In fact, we are at the heart of all
, the center, for where in the universe is the heart, the center of all? Better said, where in the center of reality, all emerging, is not the center? Where in the heart is not found the heart? Every point in the universe spins around every point in the universe.
A frequently cited expression of this vision of reality is the simile of Indra’s Net from the Avatamsaka Sutra, which was further elaborated by the Huayan teachers. The whole universe is seen as a multidimensional net. At every point where the strands of the net meet, jewels are set. Each jewel reflects the light reflected in the jewels around it, and each of those jewels in turn reflects the light from all the jewels around them, and so on, forever. In this way, each jewel, or each particular entity or event, including each person, ultimately reflects and expresses the radiance of the entire universe. All of totality can be seen in each of its parts.
You see, it used to be thought that mankind was the center of the cosmos, thus very important. Then, Copernicus, Hubble and others showed that we are just fleas on a speck of dust in one galaxy among countless galaxies ... so apparently unimportant in our relative smallness. However we Mahayana Buddhists (and many modern physicists!) tend to see the cosmos as more like the surface of a sphere, like the surface of this ball or balloon ...
For the surface of a sphere, no matter the size of the sphere, EVERY point on the surface is as much the center of the surface as every other point. In a sense. every point is just as important or unimportant as any other ... and is as much the ball or balloon as any other. We are all the ball, and playing ball, in the most radical sense. In our universe, every point can also lay claim to being a center as much as any other too. In fact, each point of the ball's surface supports all the rest of the surface ... ala Indra's Net.
Remove one atom from the surface, and one changes the whole ... maybe "pops" the whole balloon.