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These studies suggest that the stars we see formed at various times, ranging from 30 million years after the Big Bang to around 5 billion years ago.
19 papers analyzed
The stars we observe in the night sky are not only a testament to the vastness of the universe but also to the immense time scales involved in cosmic events. Understanding how long ago these stars formed and the history of star formation in the universe provides crucial insights into the evolution of galaxies and the universe itself.
Peak of Star Formation:
First Observable Stars:
Age of the Oldest Stars:
Star Formation in Nearby Galaxies:
Disappearance of Debris Disks:
The stars we see today span a wide range of ages, from those formed shortly after the Big Bang to those still forming in nearby galaxies. The peak of star formation occurred around 5 billion years ago, but the first stars appeared as early as 30 million years after the Big Bang. The oldest star systems are about 12 billion years old, and the local Galactic disk is at least 9.5 billion years old. This timeline highlights the dynamic and evolving nature of the universe, with star formation continuing to shape galaxies over billions of years.
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