Monday , October 25 2021

A recently discovered little star may be one of the eldest of the universe



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Scientists are excited about the newly discovered star living directly in our Milky Way galaxy. The excitement is that the star is negligible and is about 13.5 billion years old. The star is known as 2MASS J18082002-5104378 B, and one of its main features is the very low number of metals.

Scientists say there was no metal in the early universe. Today's rich metals are believed to have been created for these early stars in the hearts, and then they were included in the universe when these ancient stars faded away. This means that the younger is the star, the more metals are inside. 2MASS J18082002-5104378 B is the lowest metal for any star that was once discovered about 10% of Earth's metallicity.

This discovery could mean that the Milky Way is much older than 8 to 10 billion years that scientists are using today. This newly discovered star is also very small at about 10% of the sun's mass, which sets the lower limit for the ability to burn hydrogen. This discovery contradicts the concepts of ancient stars. Many scholars believed that the first stars were massive and long been deleted.

The 2MASS J18082002-5104378 B is so small and darkened that it remained undiscovered so far, and its discovery was because it is part of a binary pair. The small star was discovered by studying its most massive partner star. Scientists say a small star like 2MASS J18082002-5104378 B could live for trillions of years.

This very small and weak star was found by scientists who think about how many other ancient and dim stars still can be found. Scientists say that the discovery of such stars is so rare that the needle is found between the heel walls.

SOURCE: astrophysics magazine

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