It fills interstellar space and blends smoothly into the surrounding intergalactic medium.

Recently, much work has been done on the effects of these objects on the intergalactic medium, particularly in galaxy groups and clusters.

These hot spots are formed when material from the jets collides with the surrounding intergalactic medium.

How did galaxies form out of the intergalactic medium?

The energy in the shock front is transferred via a magnetic process to protons from both the intergalactic medium and the halo.

This may have been caused by interaction with the intergalactic medium, which is stripping off the gas.

This tells us there really is an intergalactic medium.

As they continuously fell into a galaxy from the intergalactic medium, they would be denser in "caustic" rings.

His research focuses on the hot interstellar medium and intergalactic medium.

While in outer space, she is able to affect and manipulate the interstellar and intergalactic mediums.