How did scientists discover the features of the ‘unseen’ galaxy?


Science News Desk – Searching for distant celestial objects is not an easy task. From there only their light comes which not only gets blurred but also gets distorted while traveling very long distance. This happens not only with stars but also with very distant galaxies. In a new study, scientists have discovered an invisible galaxy that even today’s advanced telescopes could not see. Scientists found in their research that this galaxy was formed only 2 billion years after the formation of the Big Bang.

Galaxy Features
Viewing distant galaxies is impossible even with today’s new advanced instruments, but scientists still try to locate many objects indirectly. In the study published in The Astrophysical Journal, the team of researchers from Sisa, Italy, has also been successful in explaining the full characteristics of this galaxy.

faster than the Milky Way
For this study, the researchers used the Atacama Large Millimeter Millimeter/submillimeter Array (ALMA). They were able to determine that it was a very dense, young galaxy with a large amount of interstellar dust that was forming stars at a rate of one thousand times the star formation rate of the Milky Way Galaxy.

wealth of information
The team of researchers led by Marica Giulietti, an astrophysics doctoral student at SISA, describes the galaxy as so dark that it is almost invisible, unable to be seen with the most advanced instruments. He said that very distant galaxies are real mines of information about the past and future of the origin and evolution of the universe.

why is it hard to study
It is clear that this study must have been very challenging. Because on the one hand it is being said that today it is almost impossible to see this galaxy with advanced equipment, so how was it seen? The light coming from it was very blurred due to the distance, and it was prone to distortion due to intervening galaxies and stellar dust, changing the frequency of the light waves.

How Tools Can Help
This makes observation of such objects impossible with optical instruments, but they can only be seen with powerful interferometers that can capture large radio waves. But studying these waves is also a difficult task. Researchers say that in reality black galaxies are not even that black. Recently, many such distant galaxies have also been discovered, which even a telescope like Hubble cannot see.

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