A galaxy similar to the Milky Way at the beginning of the universe
Galaxy: Scientists have discovered galaxies in the early universe that are strikingly similar to our Milky Way galaxy.
The discovery was made by scientists using NASA’s James Webb Space Telescope, capable of peering into the universe’s past.
In an astronomical survey led by Professor Steven Finkelstein of the University of Texas at Austin, Texas, the scientists discovered galaxies that contain ‘stellar bars’. A stellar bar is a long strip of bars that runs from the center to the edges of galaxies.
According to the researchers, the galaxies identified date back to when our universe was a quarter of its current age.
The discovery of ‘bar galaxies’ like our Milky Way galaxy in the early universe will require an update to theories of galaxy evolution.
These bands were not clearly visible in early images taken by the Hubble telescope before the James Webb Space Telescope. A Hubble image of a galaxy called EGS-23205 showed only a spot. While the image taken by the James Webb Space Telescope shows a beautiful spiral galaxy with a star belt in the middle.
The team identified another ‘bar galaxy’, EGS-24268, formed 11 billion years ago and is one of the two oldest ‘bar galaxies’ ever discovered.