Tue. Oct 14th, 2025

James Web monitors the largest “nursery” of the nascent stars in the galaxy sciences


At the heart of our Milky Way, the most active and complicated sites of stars are located in the molecular cloud known as “Ramy B2”. Thanks to its superior capacity to see infrared, the James Web spacecraft was able to reveal amazing details in this region.

Here is a short video clip, published by the Hubble Observatory platform, during which the camera wanders in this area of ​​the night sky:

Withdrawal withdrawal

Molecular clouds are the largest and condensation of gaseous structures in our galaxy and in other galaxies, and are considered “the dihad of stars” because it is the place where the stars and planets are born.

These clouds consist mainly of molecular hydrogen with a mixture of helium and small quantities of other elements such as carbon, oxygen, and nitrogen, and often mixed with cosmic dust that blocks visible light.

For this reason we see them in visual telescopes as dark spaces that block stars behind them, while in infrared or radio waves their features are clearly exposed.

The sizes of these clouds are enormous, some extend to tens or hundreds of light years, and contain millions of times the mass of the sun. Despite this large, its density is very low when compared to the air that we breathe, only a few hundred to thousands of atoms in the cubic centimeter.

Webb’s MIRI (Mid-Infrared Instrument) shows the Sagittarius B2 (Sgr B2) region in mid-infrared light, with warm dust glowing brightly. To the right is one clump of clouds that captured astronomers’ attention. It is redder than the rest of the clouds in the image and corresponds to an area that other telescopes have shown to be one of the most molecularly rich regions known. Additional analysis of this intriguing region could yield important insights into why Sgr B2 is so much more productive in making stars than the rest of the galactic centre. Only the brightest stars in this region emit mid-infrared light that can be picked up by Webb’s MIRI instrument, which is why this image has so many fewer stars than that captured by Webb’s NIRCam (Near-Infrared Camera). The darkest areas of the image are not empty space but areas where cosmic dust and gas are so dense that light cannot penetrate them to reach the telescope. (Image description: Cosmic clouds of pink and purple, some with bright centres, are surrounded by dark areas that appear like black space dotted with bright blue stars. A group of small clouds to the right is more red than any other area of the image.)
Infrared camera provides unprecedented details of the cloud (NASA)

The secret of the archer

What draws attention is that the “Rami B2” cloud produces half of the number of stars that are formed in the area of ​​the Al -Majnah Center, although its molecular material (dust and gas) represents only 10% of the material of that region.

According to the scientists from the James Web Observatory platform, this means that it is an exceptional area in its activity compared to the vicinity, which raises questions about the factors that make it more “fruitful” than the rest of its surroundings.

By photographing it with advanced infrared tools, the Web Observatory was able to penetrate the dense dark parts in the cloud that seem to be practically as darkness in some pictures, but he revealed that these areas are not a vacuum, but rather centers where gases and dust accumulate, maybe they are sowing the next stars that have not yet been buried or are in the early stages of formation.

To understand the idea, he imagined that one of them broke his thigh bone due to a painful accident, here he will go immediately to the hospital to make an X -ray image, in order to penetrate the skin and show what falls under it.

The James Web Observatory performs a similar function.

The James Webb Space Telescope could soon send information about the atmospheres of planets in the TRAPPIST-1 system. (NASA-GSFC/Adriana M. Gutierrez)
James Web from the monitoring of the demolition and stellar gatherings (NASA)

Scientists questions

In the shots captured by the “Miri” camera on the observatory, the cosmic dust appeared glowing by heating by the surrounding young stars, while the “Nermam” camera showed bright colored stars hiding behind the dense clouds in infrared.

By analyzing these images, astronomers hope that James Web will contribute to solving some ancient puzzles in the science of stars: How does the star start his journey from huge gas communities? What makes some clouds more productive than others? Are there environmental engines (such as magnetic fields, or interacting with central black holes) that increase the efficiency of stars?

(tagstotranslate) Science


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