Scientists have discovered the age of our galaxy and concluded that it formed at the same time as supermassive black holes.
Article by: Andacs Robert Eugen, on 26 March 2022, at 09:57 am Los Angeles time
Researchers discovered have the age of our galaxy, which is said to have formed 800 million years after the Big Bang, and about the same time, supermassive black holes formed.
This is how the researchers came to the conclusion that our galaxy was formed very close to the formation of the first supermassive holes.
Scientists have also come to the conclusion that cosmic dust settled in the center of our galaxy 13 billion years ago, "shortly after the Big Bang."
And as for the outer edge of our galaxy, well, it would have formed after the Milky Way collided with the dwarf galaxy Gaia-Enceladus 8-11 billion years ago.
Scientists Maosheng Xiang and Hans-Walter Rix of the Max Planck Institute for Astronomy have studied nearly 250,000 stars to follow the evolution of our galaxy. Researchers have largely studied low-mass stars, like our Sun, during their mid-life phase.
Why in their middle phase?
Because this is the time when the brightness of their rising hydrogen levels allows us to more easily observe and estimate their life cycle.
"With an innovative approach to estimating star birth dates, Xiang and Rix have been able to help us better understand how our galaxy formed," physicist Timothy Beers of Notre Dame University said in a new editorial .
"And the approach is scalable, which means that as data becomes available for larger samples of Milky Way stars, that picture will become even clearer," he said.