Astronomers find the oldest spiral galaxy known
The picture below is a picture of the oldest spiral galaxy known that scientists said 12.4 billion years ago. The ancient Galaxy named BRI 1335-0417, and the image was taken by a telescope atacama Millimeter \ Submillimeter Array (Alma) in Chile. The image was important because it showed that the spiral galaxy was formed immediately after 1.4 billion years after the Big Bang. Photos like this basically looked back in time because we saw it because more than a billion years ago because the amount of time needed light to reach us.
Astronomer Dr. Kai Noeske said the photo showed that the galaxy began to resemble a modern galaxy of approximately 1 billion years earlier than previously trusted. Scientists say the spiral galaxy is a more mature form of galaxy. In the early stages of the galaxy, dark matter brings hot gas together in a clump that creates a star. The stars then joined together to create a larger galaxy that at the beginning of their lives was Misshapen. Finally, galaxies start spinning, making shapes like disk.
The spiral galaxy occurred when the disk began to be disturbed. Noeske said that besides being beautiful to see, spiral arms also compress gas to become a catalyst for a new star formation. At present, scientists believe the Galaxy formation peaked around 3.3 billion years after Big Bang when most stars were present in the universe formed. It was surprising that BRI 1335-0417 already had a structure similar to the closest galaxy before the active phase of the galaxy formation. Before finding BRI 1335-0417, the oldest galaxy known to be formed 2.5 billion years after the Big Bang.
It made BRI 1335-0417 older about 1 billion years. New findings change scientific knowledge about how and when galaxies are formed and evolved into what we see today. Astronomers noted that while BRI 1335-0417 was the oldest spiral galaxy known, it was not the oldest galaxy ever observed. The title went to the galaxy called GNZ11 saw last December which was formed 13.4 billion years ago, only 400 million years after the Big Bang.