Yesterday, Thursday, the scientific magazine “sciencealert” published a report in which it talked about the discovery of a strange cavity inside the Milky Way that had not been previously observed by scientists, as they tried to understand it and find a logical explanation for its appearance.
Giant cavity in the Milky Way
The magazine said in its report: “The region of space, which is about 700 light years away, is a wonderful exception. There, between the constellations of Perseus and Taurus, astronomers found a large spherical void with a diameter of more than 500 light years.”
The magazine added that the cavity was observed in the space between two clouds called “Perseus” and “Taurus”, which is a very large spherical cavity.
According to the report, around this empty hollow ball spread these two clouds, which contain large amounts of cold gas and dust.
Scientists named this cavity “Per-Tau Shell”, explaining that it may have been the result of at least one giant “supernova” explosion that occurred millions of years ago.
In this regard, said theoretical astrophysicist, Shmuel Bialy, of the Harvard-Smithsonian Center for Astrophysics (CfA): “Hundreds of stars are forming or already present on the surface of this giant bubble.”
The astronomer explained the reason for this phenomenon, saying: “We have two theories, either one supernova exploded in the heart of this bubble and pushed the gas out, forming what we now call (Perseus-Taurus Supershell), or that a series of supernovae that occurred over millions of years created it by the time”.
The researchers used data collected from the European Space Agency’s “Gaia” satellite observatory, which has been working since 2013 to map the Milky Way in 3D in the greatest detail and highest resolution.
According to the research published in the scientific journal “The Astrophysical Journal Letters”, astronomers were able to create three-dimensional maps of the gas in these molecular clouds and others after analyzing the captured images.
In turn, astronomer Catherine Zucker of Harvard-Smithsonian University (CfA) said: “We’ve been able to see these clouds for decades, but we never knew their true shape, depth or thickness, and we were not sure how far the clouds were.” .
The results of the analyzes indicated that it is possible that the spherical void was caused by a very massive supernova explosion, which led to a shock in all directions in interstellar space.
As this shock wave expands, it pushes and compresses the material in the interstellar medium, pushing it to the edges to form a ball-shaped hole in the void.
The team also believes that this Big Bang that formed the “Per-Tau Shell” occurred between 6 and 22 million years ago, as indicated by reconstruction and analysis.
Finally, for the time being, the bubble doesn’t seem to expand anymore – it now serves as a memorial to the circle of life. cosmic“This shows that when a star dies, its supernova generates a chain of events that may eventually lead to the birth of new stars,” said astronomer Bialy.