“stellar wind”
there’s no atmosphere in space
In space, no one can hear you fart...
SAM:
Steller wind = particles radiated or ejected from stars. These particles travel through space.
see: https://spaceweather.com/
“No atmosphere”
There is, but its very diffuse.
https://earthsky.org/astronomy-essentials/definition-what-is-interstellar-space/