Astronomers have found a lot of galaxies that shouldn’t exist.
Ian O’Neill via Discovery:
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Astronomers have detected something baffling at the furthest frontiers of our observable universe: massive galaxies — lots of massive galaxies — that shouldn’t even exist.
Depending on the wavelength you observe the universe in, different celestial objects and cosmic phenomena present themselves. This rule is especially true when looking deeper into the universe — the further you look, the farther back in time you can see. Because the universe is expanding, the most ancient light traveling over these vast distances becomes more difficult to observe.