July 5, 2022, 13:48

Videos: Astronomers Spot Galaxy Similar to Milky Way in Early Universe

Videos: Astronomers Spot Galaxy Similar to Milky Way in Early Universe

Scientists may soon change their theories on the formation of galaxies after the recent release of an image which shows a young galaxy that bears a resemblance to our own Milky Way, but from when the universe was 10% of its current age.

Using archived observations from the Atacama Large Millimeter/submillimeter Array (ALMA) in Chile’s Antofagasta Region, a team of astronomers were able to look at the distant galaxy SPT–SJ041839–4751.9, or SPT0418–47, as it appeared at a young age – some 1.4 billion years after the Big Bang. The galaxy is about 12.4 billion light-years from Earth, meaning that the light we see from it now was emitted when the universe was relatively young.

While the image of SPT0418–47 appears to be a perfect ring, the view of the galaxy is actually being gravitationally lensed by a galaxy between our own Milky Way and itself.

Scientists were also able to use computer modeling to reconstruct SPT0418-47 and show what they believe to be the actual shape and motion of its gas. The result of that can be seen toward the end of the video below.

The research has since been published in the multidisciplinary science journal Nature.

It has been previously believed that features observed in SPT0418–47 did not form until later in galactic evolution.

“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,” noted astrophysicist Simona Vegetti of the Max Planck Institute for Astrophysics.

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