Gas halos are the perfect food for supermassive black holes at the center of early galaxies, which are now seen as they were over 12.5 billion years ago
The discovery suggests that a large structure such as a protocluster already existed at a time when the universe was only about 800 million years old—six percent of its present age
Observing real galaxies in space can only provide snapshots in time, so researchers who want to study how galaxies evolve over billions of years have to revert to computer simulations
By automating the discovery process, scientists can quickly scan sets of images, and return precise predictions with minimal human interaction
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