Hubble discovers the most distant star ever detected

the james webb space telescope continues to prepare his instruments to begin what should be a long and fruitful season of work. However, its predecessor kept giving us good news. And it’s thanks to Hubble a team of scientists from Johns Hopkins University succeeded in detecting a star which formed 900 million years after the Big Bang. This makes it the most distant ever found, as finding star systems older than 1,000 million years after the big bang was a challenge.

In fact, in the history of the universe, there is a vacuum of immense uncertainty, between 400,000 years and 1,000 million years after the Big Bang. The detection limit of the most precise man-made instruments has kept scientists from laying eyes on this period of history. However, Hubble is not just any instrument.

Thanks to him, a galaxy was formed 250 million years after the Big Bang. But nothing like it had been done with a star or star system. At least, it hadn’t been done until now, since it was Hubble itself that once again did it. The research data is published today in Nature.

The Dark Ages after the Big Bang

radiation from microwave background It is a type of electromagnetic radiation that occupies the entire universe. Thanks to their study, we know with some precision what the universe looked like. 400,000 years after the Big Bang.

At that time, the temperature was low enough for protons and electrons to come together to give neutral hydrogen. In this way, part of the seed was sown that would eventually give birth to stars. However, it was still early.