Within this universe, we are just a drop in the cosmic ocean.
Everything that humanity has ever witnessed is limited to a ball with a diameter of only 13,000 km.
Even other planets routinely occupy the size of the Earth thousands of times.
Stars start out smaller than the larger planets, but get much larger.
The largest giant stars have diameters exceeding billions of kilometers.
They are comparable in size to the event horizon of more massive black holes.
But even the largest individual objects do not correspond to the cosmic groups of things.
Around each star system, Oort clouds span several light years: tens of trillions of kilometers.
The same stars are clustered together in great galactic clusters.
At the very least, it possesses thousands of stars that span hundreds of light years.
The largest galaxies contain more than 100 trillion stars, with record-breaking Alcyoneus spanning an unprecedented 16 million light-years across.
On larger scales, galaxies cluster together, forming structures hundreds of millions of light-years across.
The largest of the giant clusters, voids, and filaments – though unrelated to gravity – span billions of light years.
Overall, our observable universe spans 92 billion light-years.
But the invisible universe must be at least hundreds of times larger.
For all we know, the universe may be infinite.
Mostly Mute Monday tells an astronomical story with pictures, visuals, and no more than 200 words. taciturn; smile more.