/sci/ - Science & Math

What if successfully building viable machinery for interstellar travel is the great filter and the universe is filled with intelligent life that is trapped in their solar systems, whether they invent fusion of the singularity or whatever?

>the intracluster medium (ICM) is the superheated plasma that permeates a galaxy cluster. The gas consists mainly of ionized hydrogen and helium and accounts for most of the baryonic material in galaxy clusters. The ICM is heated to temperatures on the order of 10 to 100 megakelvins, emitting strong X-ray radiation.
Why the fuck are random hydrogen particles in the space between galaxies hotter than the center of the sun? They should emit radiation in every goddamn direction. Astronomy is bullshit.