The light from this galaxy traveled 13.4 billion years to enter the field of view of the James Webb Space Telescope. As such, it is crowned as the most distant and oldest galaxy ever captured by any human instrument. Its age is estimated at about 350 million years after the Big Bang.making it an outstanding achievement for a telescope, according to webbtelescope.org.

The universe was barely 350 million years old when this galaxy directed its light in our direction.. At that time, the Big Bang had just happened—in cosmic terms—and the universe was still a dark, dense, hazy mass that hid the first rays of light in clouds of matter. Thanks to James Webb, it has become possible to see the past of everything we know and do not know.

According to NASA, James Webb’s spectroscopic observations are so detailed that Scientists have been able to very accurately measure the distance traveled by light.. In addition, the level of detail also allows them to analyze its properties and composition even at this distance.

Brant Robertson, an astronomer at the University of California, Santa Cruz, comments: “We first discovered galaxies just 350 million years after the Big Bang.” A) Yes, highlights how safe they can be “from their fantastic distances”.

James Webb brings back the aeonic view of the universe and its first galaxies.

The further away the object, the weaker the light coming from it. For this reason, the galaxy, 13.4 billion years distant, is not quite a beacon in the dark. Actually, This is the flame of a candle, visible from the satellite scale.. But here James Webb’s tools come to the rescue.

Thanks to the MIRI and NIRCam cameras, the telescope is able to capture infrared light from objects. Due to the expansion of the universe during its journey through space, visible light undergoes an effect called redshift.. This brings it into the infrared spectrum. The higher the redshift index, the further it is from us.

Discoveries of James Webb have redshifts of 12.63 and 13.20. This corresponds to about 13.5 billion light years on a more general scale. Similarly, it’s a gain if we compare it to 10.38 and 11.58, which are the most distant galaxies detected with the Hubble Space Telescope.

What will this help us learn about the universe? We still don’t know. The truth is that we are getting closer and closer to the beginning of everything. Whether we can observe it or not, only the future can answer.

A look at the start of it all

Since its launch, James Webb has been touted as an instrument capable of exploring the beginning of the universe. In addition to creating beautiful images of merging galaxies and other curious celestial objects, space telescope completed its main mission.

Thanks to its technology, we can improve our understanding of the first few million years of the universe. After all, the Big Bang is one of the most studied events by scientists, and for good reason.

Although there are models that explain the formation of the Universe from its birth to its development and its current period; none of this can be taken for granted. It is based on theories that can be disproven or improved with more and more research. And that’s exactly where James Webb fits in. Not trying to prove us right, but helps us show where we went wrong and that we can improve understanding.

Source: Hiper Textual

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