What is the approximate density of the Intergalactic Medium (IGM)?

Answer

Less than one particle per cubic meter

The IGM is exceptionally diffuse, with density estimates hovering around less than one particle per cubic meter, which is significantly sparser than even the best laboratory vacuums.

What is the approximate density of the Intergalactic Medium (IGM)?

#Videos

Scientists Detect Glow of Hidden Stars Outside of Galaxies ...

Spacegalaxyexistenceuniversecosmology