The galaxy, known by the not terribly pithy name of SPT0418-47, is located so far away that light from it takes more than 12 billion years to reach us. This means that observing it is like looking back in time to when the universe was very young, at just 1.4 billion years old. And surprisingly, the galaxy looks remarkably like our own, much older galaxy.


Scientists had previously believed that all galaxies which formed in the early universe were chaotic and unstable, unlike our relatively sedate galaxy. But this new finding challenges that belief.


"This result represents a breakthrough in the field of galaxy formation, showing that the structures that we observe in nearby spiral galaxies and in our Milky Way were already in place 12 billion years ago," lead researcher Francesca Rizzo, Ph.D. student from the Max Planck Institute for Astrophysics in Germany, said in a statement.


The image of the galaxy shown above appears in a ring shape due to the way in which the data about it was collected. As the galaxy is so far away, it is impossible to see using typical methods. So the team collected data with the Atacama Large Millimeter/submillimeter Array (ALMA) by using a nearby galaxy as a magnifying glass, with a technique called gravitational lensing.


Then, to see the distant galaxy as it actually exists, they reconstructed a realistically shaped image from this ring using computer modeling.


"When I first saw the reconstructed image of SPT0418-47 I could not believe it," Rizzo said. "A treasure chest was opening."

This raises questions as to how such an orderly galaxy was able to form in the chaos of the early universe, and indicates that our previous assumptions about galactic evolution may be incorrect.


"What we found was quite puzzling; despite forming stars at a high rate, and therefore being the site of highly energetic processes, SPT0418-47 is the most well-ordered galaxy disc ever observed in the early universe," explained co-author Simona Vegetti, also from the Max Planck Institute for Astrophysics. "This result is quite unexpected and has important implications for how we think galaxies evolve."


The findings are published in the journal Nature.


Resource: digitaltrends.com


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Astronomers have found our Milky Way's galactic twin

The galaxy, known by the not terribly pithy name of SPT0418-47, is located so far away that light from it takes more than 12 billion years to reach us. This means that observing it is like looking back in time to when the universe was very young, at just 1.4 billion years old. And surprisingly, the galaxy looks remarkably like our own, much older galaxy.


Scientists had previously believed that all galaxies which formed in the early universe were chaotic and unstable, unlike our relatively sedate galaxy. But this new finding challenges that belief.


"This result represents a breakthrough in the field of galaxy formation, showing that the structures that we observe in nearby spiral galaxies and in our Milky Way were already in place 12 billion years ago," lead researcher Francesca Rizzo, Ph.D. student from the Max Planck Institute for Astrophysics in Germany, said in a statement.


The image of the galaxy shown above appears in a ring shape due to the way in which the data about it was collected. As the galaxy is so far away, it is impossible to see using typical methods. So the team collected data with the Atacama Large Millimeter/submillimeter Array (ALMA) by using a nearby galaxy as a magnifying glass, with a technique called gravitational lensing.


Then, to see the distant galaxy as it actually exists, they reconstructed a realistically shaped image from this ring using computer modeling.


"When I first saw the reconstructed image of SPT0418-47 I could not believe it," Rizzo said. "A treasure chest was opening."

This raises questions as to how such an orderly galaxy was able to form in the chaos of the early universe, and indicates that our previous assumptions about galactic evolution may be incorrect.


"What we found was quite puzzling; despite forming stars at a high rate, and therefore being the site of highly energetic processes, SPT0418-47 is the most well-ordered galaxy disc ever observed in the early universe," explained co-author Simona Vegetti, also from the Max Planck Institute for Astrophysics. "This result is quite unexpected and has important implications for how we think galaxies evolve."


The findings are published in the journal Nature.


Resource: digitaltrends.com


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