Find the oldest astral group in the universe

After decades of research, an analysis of the light finally determined the age of the ancient clusters of stars of the Milky Way, called HP1.

Scientists have discovered that HP1 clusters are 12.8 billion years old, making it one of the oldest constellations of all time, not only in our galaxy, but throughout the world. ;universe.

The group of stars "HP1" is in galactic proliferation, known to scientists for a long time, but getting an accurate reading of the light signature, called spectrum, has proven that "HP1" is complex because of the way the Atmosphere distorts the incoming light.

Previous group age estimates dating back to 1997, indicate that the lifespan of "HP1" is about 13.8 billion years, which is almost equal to the number of years in the group. age of the universe according to Russia today.

But optical technology that eliminates adaptive optics in real time has allowed scientists to obtain high-resolution observations using the Gemini Observatory in Chile, which ultimately determined the age of HP1 star clusters.

"This group of stars looks like an ancient fossil buried deep within the galaxy, and we are now able to date it long when the universe was very small," said astronomer Stefano Sosa of the University of São Paulo in Brazil. "She's also one of the oldest stars we've ever seen."

The new data allowed the team to verify the absolute size of star clusters located approximately 21,500 light-years away from Earth.

"HP1 plays an important role in our understanding of the formation of the Milky Way," said astronomer Leandro Kerber of the University of Sao Paulo and the University of Santa Cruz. "This will help bridge the gap between the past and present of our galaxy."