Quasars: The Galactic Demise Caused by Black Holes
The universe presents itself as an expansive ocean, seemingly empty and vast, dotted only by occasional islands of galaxies. However, appearances can be deceiving, as the galaxies themselves contain only a minute fraction of the total atoms in the cosmos. The majority of these atoms drift within the intergalactic medium, the vast expanse that lies between galaxies. Within this cosmic sea, gases extend from each galaxy like intricate roots, as gravity guides fresh matter into this dense cosmic forest. It is within the intergalactic medium that the building blocks of creation reside: hydrogen and helium. These primordial elements gather and form sheets and filaments that flow into galaxies, eventually leading to the birth of new stars.