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A new study sheds light on the gas surrounding galaxies, known as the circumgalactic medium ( CGM ) The CGM , a halo of gas enveloping a galaxy's stellar disc, makes up about 70% of the galaxy’s mass.
The findings reveal that the cloud of gas surrounding the galaxy extends 100,000 light years into space, the farthest distance the team was able to observe.
The study's observations revealed stars within the galaxy ionizing gas with their photons.
Astro 3D's findings contribute directly to ASTRO 3D’s mission to understand how galaxies build mass over time.
Dr. Nielsen suggests that the CGMs of the Milky Way and Andromeda could already be overlapping and interacting, potentially offering insights into the future collision between these two galaxies.