Its age was determined by metallic content.
Astronomers at Monash University in Australia have discovered an old star in the Milky Way galaxy, the age of which reaches record 13.5 billion years. This object appeared about 300 million years after the Big Bang.
It writes Chronicle.info according to rambler.ru.
According to scientists, the 2MASS J18082002-5104378 B can be one of the oldest stars in the universe. Its age was determined by the concentration of metals in it almost none. Metals and other elements that are heavier than hydrogen are thrown into an interstellar medium, with the death of the first stars, and with each new generation a metal star rose. It is estimated that the concentration of metals in the 2MASS J18082002-5104378 B is approximately 10 times lower than that of the Earth.
The presence of such stars on the milk path shows that the galaxy is older than 3-5 billion years old, as it was before. In addition, its mass is only 10 percent of the mass of the Sun, which is the lower limit of hydrogen combustion.
According to scientists, this means that the first first stars in space are probably not supermasive and formed from small amounts of material. This small size enables her to live for at least some ten billion years.