Understanding the formation of galaxies.

This article discusses the use of atomic hydrogen to understand the formation of galaxies. Atomic hydrogen, the simplest atom in the universe, emits a radio wave that can be used to map out the structure of galaxies and find galaxies across the universe. The article also mentions the role of magnetic fields in confining gas movement and the need for fresh gas for the Milky Way to continue creating stars. The author, Professor Naomi McClure-Griffiths, shares her research on the interaction between magnetic fields and galactic gas. She also mentions the discovery of a gaseous spiral arm in the Milky Way and expresses her interest in understanding how other galaxies first formed. [Extracted from the article]