This is the center of the Milky Way galaxy.
What is the most extreme environment in the universe? It wouldn't be the core of a star: there, according to the universe's common "extreme indicators," it's as comfortable as a hot spring; nor would it be the surface of a black hole, though it devours everything, it's not considered vast in scale; nor is it the star formation cloud, even though its energy boisterous activity is intense, there are ultimately moments of tranquility within it. What truly qualifies as an extreme environment in the universe is this most brilliant galaxy nucleus—it is magnificent and glorious, radiantly splendid, yet it's an absolute death zone: at least for those civilizations just stepping into the universe.
