JAKARTA – Astronomers have finally found the answer to the question of when the stars began to shine.
The phenomenon, also known as the “cosmic dawn,” is said to have occurred between 250 and 350 million years after the Big Bang.
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The analysis indicates that the first galaxies in the universe emit a fairly strong light, which can be seen with NASA’s James Webb space telescope, which is scheduled to launch this year.
The study of exactly when the stars begin to shine was the focus of research by an expert at University College London, England, Richard Ellis, published in the scientific journal The Monthly Notices of the Royal Astronomical Society.
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Speaking to BBC News, Professor Ellis explained that an important aspect of the study is to go back, as far as possible, to see the first generation of stars and galaxies.
“And now, we have the first compelling evidence of when our universe began to shine,” Ellis said.
Ellis’ team analyzed the six most distant galaxies. These galaxies are so far away that their appearance when viewed with the world’s most powerful telescope is no more than a few pixels on a computer screen.
They are also among the first galaxies in the universe. After determining their age, the team calculated the beginning of the cosmic dawn, which is when the first stars formed.