Astronomers have recently discovered a new type of galaxy, known as “extremely metal-poor galaxies” (XMPs), which could provide important clues to the earliest stages of galaxy formation. XMPs are galaxies with very low amounts of heavy elements, such as iron and oxygen, compared to other galaxies. This lack of metals could reveal the conditions of the early universe shortly after the Big Bang, when the first stars and galaxies began to form. By studying these XMPs, scientists can gain insight into how galaxies developed from the early universe to the modern day.

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source: Phys.org