▲ The latest discovery is that the center of the Milky Way galaxy ejects dense cold gas, just like a bullet.
News from November 3, Beijing time, according to foreign media reports, an international research team discovered that the center of the Milky Way galaxy jets dense cold gas, just like bullets .
How these gases are ejected is still a mystery, but Australian National University professor Naomi McClure-Griffiths said their findings may have important implications for the future of the galaxy.
Griffith said: “Galactics are very good at’lifting a rock and hitting themselves in the foot.’ When a galaxy releases a large amount of mass, it will lose the material used to form stars. If the galaxy loses enough material, it will not be able to form. It’s stellar.”
So it’s exciting to observe the Milky Way’s loss of star-forming gas, which makes you wonder what will happen next? At the same time, this latest study also raises new questions about what is happening in the center of the galaxy!
Griffith said: “Since the discovery of the so-called’Fermi bubble’ 10 years ago, the wind at the center of the galaxy has been a subject of controversy. The Fermi bubble is two huge spheres filled with hot gas and cosmic rays. .”
We have now observed that there is not only hot gas in the center of the Milky Way galaxy, but also dense gas. Cold gas is heavier, so it is not easy to move.
There is a huge black hole in the center of the Milky Way, but scientists do not know whether the black hole will release gas or whether thousands of massive stars in the center of the Milky Way have been blown away. The author of the research report, Dr. Enrico Di Teodoro (Enrico Di Teodoro) of Johns Hopkins University, said that we don’t know how black holes or star formation produce this phenomenon. We are still looking for conclusive evidence, but With the deepening of understanding, the situation will become more and more complicated.
This is the first time this phenomenon has been observed in the Milky Way, and we have observed that this type of process also occurs in other galaxies. But other galaxies outside the Milky Way may have larger black holes and more active star formation, making it easier for galaxies to disperse matter.
Teodoro said that there are technical bottlenecks in observing galaxies outside the Milky Way, and we cannot obtain a lot of detailed data. The Milky Way is like a laboratory. We can enter this laboratory and observe the operation of things in the universe up close. It is reported that the bullet-like gas in the Milky Way was observed by the Atacama Pathfinder Experiment (APEX) of the European Southern Observatory (ESO) in Chile. The research report was published in the journal Nature.
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