A non -successful picture from space can change the development of galaxies forever. Only a billion years after the big bang there was a spiral galaxy that is surprisingly comparable to our Milky Way, as researchers now discovered.
The discovery therefore doubted the earlier presentation of the origin and development of large galaxies, the scientists write in the magazine “Astronomy & Astrophysics”.
The James Webb Space Telescope, which was taken into use three years ago, has already detected many galaxies, which was founded 300 to 500 million years after the Cosmos was founded 13.8 billion years ago. But these are consistently small, irregularly formed systems.
According to the ideas of the astronomers, these dwarf systems arise in the course of the century because of collisions and mergers – and therefore finally the large spiral galaxies such as our Milky Way.
Diameter of around 60,000 light years
The discovery of a fully trained spiral galaxy was therefore surprising for the researchers a billion years after the big bang. The system called Zhulong after a kite of Chinese mythology has a diameter of around 60,000 light years and contains more than 100 billion stars – values that are fairly comparable to our Milky Way.
And similar to the Melkweg, Zhulong shows a central thickening of older stars, surrounded by a flat disc with spiral arms in which new stars are made.
This, according to Mengyuan Xiao from the University of Geneva, raises the question of how a spiral galaxy developed and structured and structured spiral galaxy could develop in such an early period of cosmic development. Xiao and her colleagues have detected the unusual galaxy as part of the SO -driven panoramic survey. Parallel with other observations of the Webb telescope, random regions of the air are scanned.
Discovery offers earlier theories
In this way you can find unknown objects in the young Cosmos. “This discovery shows the potential of such parallel observations for the discovery of rare Sky objects,” Christina Williams emphasized, chief scientist of the panoramic program.
And such objects are a challenge for the earlier theories about the development and development of galaxies. Xiao and her colleagues hope to detect further developed galaxies in the young Cosmos as part of the panoramic program. They also want to take a closer look at the Webb telescope and the large radio telescope system Alma in Chile Zhulong to encourage the history of this Milky Way.
Source: Krone
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