Stars from the dawn of the universe have been found in the heart of our own Galaxy

 ncient stars born during the Cosmic Dawn were identified in the center of the Milky Way.

As part of the survey to discover some of the oldest known stars in the universe, scientists have conducted a comprehensive search for these ancient stars, but difficult, and found that the measure they rotate around the galactic center is relatively quiet, despite. Chaos surrounded them.

Their findings, led by astronomer Anke Arentsen from the University of Cambridge in the UK, were presented at the UK’s annual National Astronomy Conference.

We can tell that the age of the star is based on how much metal is in it. When the first stars in the universe were formed, they must have made themselves out of the elemental materials available at the time – mainly hydrogen and helium. But the nuclear furnace burning in their cores began fusing hydrogen atoms together. Go for the heavier stuff, from helium to iron.

Then, when they explode in complex supernovae, they carry these heavier elements throughout space, along with the heavier elements created in the energetic secondary supernova process. Later stars thus begin their lives with a greater proportion of heavier material. The younger the star, the more metallic it is.

Conversely, the older the star, the less metal it tends to contain. We have found a number of ordinary stars floating around the Milky Way, but most is in the outer region, and the state of the halo galaxy. Astronomers think that the oldest stars should be hanging in the center of the galaxy, but because this region is rich in metals, and there is a lot of dust blocking our view, they are often harder to find.

Anke and her colleagues started a project called the Pristine Inner Galaxy Survey (PIGS) to try to find them. By analyzing the spectrum of light emitted from certain stars, astronomers can find wavelengths that are broadened or damped by the presence of certain elements. They looked for elemental signatures consistent with very low-metallicity stars, and identified about 8,000 candidates.