How does the density of even the densest parts of a nebula compare to the best vacuum achievable in a laboratory on Earth?

Answer

Far less dense

Even in the densest regions, nebulae are far less dense than the best laboratory vacuums achievable on Earth; gravity requires immense spatial volume and time to successfully cause material condensation.

How does the density of even the densest parts of a nebula compare to the best vacuum achievable in a laboratory on Earth?

#Videos

What Is A Nebula? - YouTube

Spaceastronomystarsnebulagas