The intergalactic medium is a sparse gas that connects galaxies, with a filamentous structure and an average density of 10 to 100 atoms per cubic meter. It is much hotter than the universe’s average temperature, with ionized hydrogen as its major constituent. The intracluster medium is a condensed area in the middle of galaxy clusters […]
Intergalactic stars, also known as star outcasts or wanderers, are stars that don’t belong to a galaxy. They may have been ejected from a galaxy due to a merging process or a black hole. The Hubble telescope observed intergalactic stars in the Virgo cluster, and their estimated number could exceed a trillion. However, a view […]
