This article has been reviewed according to Science X's editorial process and policies. Editors have highlighted the following attributes while ensuring the content's credibility: The NASA/ESA/CSA James Webb Space Telescope has unveiled numerous stars formerly hidden by clouds of dust in a stellar nursery known as NGC 7129—a cauldron of cosmic creation, 3,300 light-years from Earth. Webb captured infrared light, which pierces through the dense matter that scatters or absorbs other types of light.
This region, rife with stellar objects in different stages of their lives, offers an opportunity to explore how stars shape their surroundings. The stars in this cluster are in different stages of their development, as the more massive stars form and evolve the fastest. The most massive (and the most mature) is the region's luminous central star, LkH(alpha) 234.
This star, which sports the image's most prominent diffraction pattern, has around five to eight times the mass of our sun. So-called pre-main-sequence stars like these have mostly finished gathering mass and have begun contracting under the force of gravity, causing their temperatures to rise. In time, this star will fuse its own hydrogen like our sun.
The cavity to its left, which appears in gold and spans about 3.5 light-years, is the largest demonstration of the central star's impact. Outflows from an earlier stage of the star's life cycle carve into the dense molecular cloud of hydrogen. Both the outflows and the star's light energize the gas, causing it to glow.
While much of this hydrogen gas is blown away, a large amount is also compressed, creating the conditions for even more stars to form. A few of these young stars are visible within the cavity. Several of these are also pre-main-sequence stars and generate stellar winds.
The nearby bow shocks, the curved, compressed gas that appears near the stars, are created as those winds push into the energetic gas and form their own, smaller cavities. Together, the central star and the embedded stars create a hot environment that pushes against the colder and denser molecular gas and forms a boundary known as a photodissociation region. In this region, the molecules of hydrogen break down into atoms.
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