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Study Over Movement Of Intergalactic Gas And Dust Confirm That Half Of Our Milky Way Came From Distant Galaxies

Astronomers looking at how intergalactic gas and dust moves across great distances found that up to half of the matter surrounding us comes from galaxies far, far away.

Our Earth became habitable mainly because of water and Interesting fact about water is It is an alien stuff for our planet, came to Earth with asteroids. Like that, as much as half of our Milky Way likely came from distant galaxies. It is likely that much of our Milky Way’s matter was in other galaxies before it was kicked out by a powerful cosmic wind, travelled across intergalactic space and eventually found its new home in the Milky Way.

Astrophysicists who were analyzing galaxy formation recently looked at how intergalactic gas and dust is transported over time and across great distances. They found that up to half of the matter in our Milky Way galaxy likely comes from other galaxies far, far away. This kind of analysis is first of its kind. These findings are opening a new line of research into understanding galaxy formation.

Anglés-Alcázar and his fellow researchers used a supercomputer simulation based on the FIRE (Feedback in Realistic Environments) project, which is co-led by Northwestern physics and astronomy professor Claude-André Faucher-Giguère. FIRE uses numerical simulations that can produce realistic 3D models of galaxies. Anglés-Alcázar developed state-of-the-art algorithms to follow how a galaxy forms over time, from just after the Big Bang to the present day.

After Spending literally several million hours of continuous computing time, the team was able to quantify how galaxies acquire matter from the universe over time. They did this by “tracing cosmic inflows, galactic outflows, gas recycling, and merger histories,” according to their paper.

The simulations showed that supernova explosions within galaxies eject enormous amounts of gas, which causes atoms to be transported from one galaxy to another via powerful galactic winds. Even though galaxies are far apart from each other, the galactic winds propagate material at several hundred kilometres per second. Over several billion years, this process infused new material into galaxies, sparking star formation. The findings on galactic evolution were unexpected, and the researchers coined a new term to explain the phenomenon: intergalactic transfer.

This study transforms our understanding of how galaxies formed from the Big Bang. What this new model implies is that up to one-half of the atoms around us including in the solar system, on Earth and in each one of us comes not from our own galaxy but from other galaxies, up to one million light-years away. This study gives us a sense of how things around us are connected to distant objects in the Space.

Also Read:- The Evolution Of Magnetism In The Unfolding Universe
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