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Largest Quasar Ever Discovered Burns 100 Times Brighter Than Entire Milky Way. Glowing galactic center located near a supermassive black hole.
According to the Big Bang model, the Universe expanded from an extremely dense and hot state and continues to expand today. A common analogy explains that space itself is expanding, carrying galaxies with it, like spots on an inflating balloon. The graphic scheme above is an artist's concept illustrating the expansion of a portion of a flat universe.
perfect Ring of Fire