That’s when the first lights of the universe came on – technokrata.hu

The research team has studied six of the most distant galaxies currently known, and their light has reached Earth in more than 13 billion years. Analyzing the data collected by Hubble and Spitzer space telescopes, they came to the conclusion that galaxies could be between 200 and 300 million years old, and from this they could deduce when their first stars formed.

Experts speculate that the universe was dark for the first few hundred million years before the first stars and galaxies were formed. Nicolas Laporte, a researcher at the University of Cambridge, said astronomers have long been investigating when the first starbursts in the universe flashed.

“Our observations indicate that the cosmic dawn occurred 250-350 million years after the creation of the universe.”

Said the researcher.

PAKIN SONGMOR / GETTY IMAGES

“The Holy Grail of modern astronomy is to look back so far as to be able to see the very first generation of stars and galaxies.”

– He told Richard Ellis, Professor at Univesity College. The six galaxies we are now studying are so distant that even with the highest-resolution telescopes currently in operation, only a few pixels appear on a computer screen.

The James Webb space telescope will be the largest and most powerful space telescope in the world. Experts are confident they can use it to look back on 13.5 billion years ago, so we can see the first stars and galaxies formed shortly after the big bang.

Due to the redshift, another important task of the infrared space telescope will be to explore alien worlds. In the 1990s, the first planets to orbit outside the Solar System were found, and more than 4,000 such celestial bodies have since been identified. The space telescope will be used by researchers from 44 countries.

Source: 24.hu


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