The farthest star found by Hubble, the target for Webb in 2022. What we know so far

30/03/2022
Credit image: PNASA, ESA, B. Welch (JHU), D. Coe (STScI), A. Pagan (STScI)
Credit image: PNASA, ESA, B. Welch (JHU), D. Coe (STScI), A. Pagan (STScI)

Article by: Andacs Robert Eugen, on 30 March 2022, at 09:55 am Los Angeles time

NASA/ESA Hubble Space Telescope set a new record, discovering a star that existed in the first billion years after the Big Bang, as astronomers call it - a redshift of 6.2.

This is the farthest individual star ever observed by Hubble.

Hubble has made a "leap of 3 billion years" in the past, with the previous record of an individual star being 4 billion years after the Big Bang or rather, 30% of the current age of our Universe - redshift 1.5 as astronomers call it.

It is an open door for scientists to observe what a star looks like when the universe was only approx. 7% of his current age - redshift 6.2.

The newly discovered star is named Earendel, and astronomers expect it to increase in the coming years. Of course, the most probable star has gone through this process, but the light from it to us, it reaches over 12.9 billion years.

There is no data yet to show if the star is already dead or still exists. However, most stars are between 1 and 10 billion years old, which means that the chances are small that this star will still exist. But we will be able to know if it exists or not, only in approx. 13 billion years.

In any case, according to the European Space Agency (ESA), the star will be a new target for the James Webb Telescope in 2022.

Using Webb, scientists will be able to learn a lot about the "new" star.

"It will be observed by the NASA/ESA/CSA James Webb Space Telescope later in 2022. Webb's high sensitivity to infrared light is needed to learn more about Earendel, because its light is stretched (redshifted) to longer infrared wavelengths by the expansion of the Universe," say ESA.