Current observations, such as those of GN-z11, suggest that galaxy formation began as early as 400 million years after the Big Bang. This galaxy, observed at a redshift of z=11.09, stands as a testament to the rapidity with which the universe’s first structures began to coalesce from the primordial gas. While the detection of GN-z11 provides empirical evidence of early galaxy formation, it also opens the door to speculation about even earlier galaxies that may await discovery with future advancements in telescope technology. These first galaxies likely did not have black holes at their centers. From a distant observation, these early galaxies likely lacked the pronounced bright centers associated with supermassive black holes, which are characteristic of many galaxies observed 13.8 billion years after the Big Bang.
Galaxies are Born
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Galaxies are Born
13.4 Billion Years Ago
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Galaxies formed early in cosmic history, within a few hundred million years of the Big Bang.
Subject: Expanding Universe.
Galaxies emerged quickly from an initially simple universe. They started within a few hundred million years of the Big Bang. Observations confirm that gravity wasted little time turning primordial gas into organized systems, even before features we now consider typical. Such as central supermassive black holes commonly found in galaxies.
Flashcard.
What measures how much light has been stretched toward longer wavelengths as the universe expands?.
Answer. Redshift.
That Science Story,
was first published on TST 2 years ago.
All story is part of the broader TST project.
These short entries help separate what is known, what is inferred, and what remains open. That distinction is where careful thinking begins.
The end!