Astronomers Spotted Milky Way Look-Alike Galaxy
Milky Way galaxy is not the only galaxy found in the universe. Astronomers of Max Planck Institute for Astrophysics found a baby galaxy named called SPT0418–47. This looks like the Milky Way Galaxy, which is 12 billion light-years away from Earth. They did this with the help of the most powerful telescope. The telescope used was Atacama Large Millimetre/submillimetre Array (ALMA).
The scientists were surprised to notice that the galaxy was unstable. The galaxy was spiral and had turbulent features. The galaxy found is so much similar to our galaxy. It has a rotating disc and a galactic bulge.
What Is A Galaxy?
A galaxy comprises of gas, dust, and billions of stars. They all are held together by gravity. The Milky Way galaxy holds our entire solar system. According to astronomers, the galaxies of the Early years were unstable and turbulent. During these years, celestial bodies were not formed. Also, the galaxies were in the process of developing. Galaxies were not properly formed. They were a kind of a mess. And they showed the absence of mature galaxies.
Milky Way Look-Alike
The new galaxy mimics the milky way galaxy with a spiral shape. Astronomers said SPT0418–47 is “surprisingly unchaotic”. This is the most well-ordered galaxy disc ever observed in the early Universe.
“The big surprise was to find that this galaxy is quite similar to nearby galaxies, contrary to all expectations from the models and previous, less detailed, observations”.
- Filippo Fraternali, Kapteyn Astronomical Institute University of Groningen (Netherlands)
Few astronomers believe that researching SPT0418–47 will help them to answer. To answer the question- how the galaxy evolved after the Big Bang.
“When I first saw the reconstructed image of SPT0418–47 I could not believe it: a treasure chest was opening,”. Says Rizzo.
How SPT0418–47 was spotted?
For distant galaxies, detailed observations were done. These were done by the most powerful telescope ALMA. Alma stands for (Atacama Large Millimetre/submillimeter Array). It was done with the help of an effect known as gravitational lensing. This effect of the gravitational pull is important. The pull, from the nearby galaxy, distorts and bends the light from the distant galaxy. It then causes it to appear misshapen and magnified. The galaxy appeared as a near-perfect ring of light. It was a near-perfect ring of light with true shape and motion. And its gas from the ALMA data can be observed using a new computer. The new computer modeling technique from the lensed image and other galaxies being observed.
“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,” — Simona Vegetti (co-author), Max Planck Institute for Astrophysics.
First Time In The History Of The Universe
This is the very first time in the history of the universe where scientists have spotted a bulge so early. This bulge making SPT0418–47 the more distant “Milky Way look-alike”. And now astronomers are keen on the further understanding of the evolution of our galaxy.
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