NASA(Plasma), NOAA(Drag) & "its viscosity value is extremely low, close to zero"

"Beyond gases, there’s another state of matter called plasma. And it makes up 99.9% of the observable universe. This is completely different from plasma in our blood. We’re talking about a state of matter, that’s similar to a gas but with different properties."
https://www.nasa.gov/podcasts/curious-universe/plasma-plasma-everywhere/

"Drag is a force exerted on an object moving through a fluid, and it is oriented in the direction of relative fluid flow. Drag acts opposite to the direction of motion and tends to slow an object. As an example, think of running against a high wind and feeling the drag pushing you back in the direction of relative fluid flow. This same force acts on spacecraft and objects flying in the space environment."
https://www.swpc.noaa.gov/impacts/satellite-drag

"If spacetime is a fluid, then according to our calculations it must necessarily be a superfluid. This means that its viscosity value is extremely low, close to zero"
https://phys.org/news/2014-04-liquid-spacetime-slippery-superfluid.html