The Milky Way is not evolving as we thought: an unexpected property of the galaxy has been discovered

Earlier, in theoretical models, there was information that in the interstellar medium, elements heavier than helium and hydrogen are homogeneously mixed and have reached the level of chemical enrichment. A similar thing happens in the sun’s atmosphere: it is called solar metallicity.

But the authors of the new work denied this information: they found out that the gases do not mix so much. This will affect the previously constructed models of the evolution of galaxies.

The process of nucleosynthesis – the formation of nuclei of chemical elements heavier than hydrogen – enriches the interstellar medium, usually consisting only of hydrogen and helium, also with atoms of other heavy elements.

The authors of the new work appreciated how correct this theory is: they used the atmosphere of 25 stars and studied it with two telescopes – Hubble and VLT (Very Large Telescope). In order to measure the dust content, scientists have applied a new method.

As a result, it turned out that the interstellar medium is inhomogeneous. Even more – in some regions the metallicity was only 10% of the solar one.

Read Further

New iOS 15: release date, iPhone design and features. We tell everything that is known

An ultra-thin material was made from white graphene. It will replace servers

See a heavy attack drone that carries a ton of weapons

Leave a Comment