Bow Shock

I like to think of stars as the basic building block of the Universe. Not sure if this is an accepted opinion, but I think it works. Everything revolves around stars - planetary systems like ours, and all life here on Earth and maybe on the 1000+ exoplanets discovered to date (there's billions more - current consensus is just about every star has planets).

Here, you see a star in its larger environment - ginormous gas clouds. Stars are born from these clouds, they shape and influence these clouds, and their death creates new clouds. Above you see a star affecting a larger gas cloud environment, creating a bow shock in the clouds - just like a boat creates a bow shock in water, or a wind turbine creates a bow shock in the air, stars are shaping the larger environments in which they find themselves. Here's another example.

Anywhere there are stars and gas clouds, you'll see bow shocks.

We exist in a sea of gas - we come from this gas. Gas!

These clouds are primarily hydrogen, but also contain everything that would make up a star and its planets - iron, silver, gold, carbon, everything.