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A twin billion light years away: James Webb's new discovery - voila! technology

2023-02-16T08:53:21.439Z


NASA and the European Space Agency's Advanced Space Telescope has documented a distant spiral galaxy, in the constellation Hercules, that closely resembles the Milky Way


Photograph of the James Webb Space Telescope (Photo: European Space Agency)

Continues to deliver breathtaking images:

Astronomers at the European Space Agency (ESA) used the James Webb Space Telescope to capture an image of a spiral galaxy similar to our own home, the Milky Way.

The star system, LEDA 2046648, is a billion light-years away in the constellation Hercules;

It contains thousands of galaxies, trillions of stars and countless planets.



"The large spiral galaxy at the base of this image is accompanied by an abundance of smaller, more distant galaxies that range from full spirals to bright spots only," the European Space Agency said in a statement.

"One of Webb's main scientific goals is to observe distant galaxies in the early universe in order to understand the details of their formation, evolution and composition."

1/ Web FAQ time!



❓ What is a pre-print and why do researchers use them?


?️ Pre-prints are draft papers, sometimes posted before full peer review is complete.

This stage enables discussion, allowing researchers to improve their papers before they submit to a journal.

pic.twitter.com/DS37BAAHR3

— ESA Webb Telescope (@ESA_Webb) February 7, 2023

As you know, James Webb was specially designed and opened for photography in infrared light - so you can penetrate deeper through gas clouds and nebulae and reach the most distant stars in the universe.

In fact, the farther away objects are from us, the sooner the light was emitted from them, as it took longer to reach Earth.

So, for example, some of the objects in the image can be up to 300 million years old after the big bang.



"To exploit Webb's full potential for galactic archaeology, astronomers and engineers must first calibrate the telescope's instruments and systems. Each of Webb's instruments contains a complex array of mirrors and other optical elements that redirect and focus the starlight collected by the main mirror," they added. at the European Space Agency.

"Next, he will also study the chemical composition of thousands of galaxies to shed light on how heavy elements were formed and built up as the galaxies evolved."

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Source: walla

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