NASA's James Webb Telescope discovers Galaxy that mirrors Milky Way | Tech News

NASA's James Webb Telescope discovers Galaxy that mirrors Milky Way

NASA’s James Webb Telescope has heled find a Galaxy named Sparkler which is behaving just like our Milky Way Galaxy, which also grew by feeding on smaller galaxies.

| Updated on: Feb 13 2023, 18:47 IST
What is your favourite Hubble Telescope image? NASA wants to know
1/5 If you are interested in space, you must be excited about all the images shared by the various space telescopes. In 2022, NASA's Hubble Space Telescope has captured and shared several beautiful images. And NASA wants to know which one is your favourite Hubble Telescope image of 2022? In its latest Twitter post, NASA's Hubble Telescope has shared 4 images released in 2022 and has asked to vote for your favourite image. It can be known that the four images shared by the Hubble Space Telescope are of DEM L 190, NGC 976, HCG 40, and Terzan 2. (Hubble Space Telescope)
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2/5 DEM L 190, is a remnant from a massive star that died in a supernova blast whose light would have reached Earth thousands of years ago. This filamentary material will eventually be recycled into building new generations of stars. Our own sun and planets are constructed from similar debris of supernovae that exploded in the Milky Way billions of years ago, according to NASA. (Hubble Space Telescope)
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3/5 The galaxy NGC 976 lies around 150 million light-years from the Milky Way in the constellation Aries. Despite its tranquil appearance, NGC 976 has played host to one of the most violent astronomical phenomena known – a supernova explosion. These cataclysmically violent events take place at the end of the lives of massive stars and can outshine entire galaxies for a short period. While supernovae mark the deaths of massive stars, they are also responsible for the creation of heavy elements that are incorporated into later generations of stars and planets. (Hubble Space Telescope)
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4/5 The Hickson Compact Group 40 (HCG 40) is an unusual close-knit collection of five galaxies. This menagerie includes three spiral-shaped galaxies, an elliptical galaxy, and a lenticular (lens-like) galaxy. Somehow, these different galaxies crossed paths in their evolution to create an exceptionally crowded and eclectic galaxy sampler. Caught in a leisurely gravitational dance, the whole group is so crowded that it could fit within a region of space that is less than twice the diameter of our Milky Way's stellar disk. (Hubble Space Telescope)
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5/5 The Terzan 2 is a globular cluster in the constellation Scorpio. Globular clusters are stable, tightly gravitationally bound clusters of tens of thousands to millions of stars found in a wide variety of galaxies. The intense gravitational attraction between the closely packed stars gives globular clusters a regular, spherical shape. As a result, images of the hearts of globular clusters, such as this observation of Terzan 2, are crowded with a multitude of glittering stars. (Hubble Space Telescope)
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A Milky Way-type galaxy has been discovered by NASA James Webb Telescope. (Image Credit :James Josephides, Swinburne University.)

Researchers utilizing early data from the James Webb Space Telescope have discovered a young galaxy that resembles the early stages of our Milky Way Galaxy. Named "The Sparkler", the galaxy is embedded in a network of globular clusters and satellite galaxies and appears to be consuming them as it expands. The findings have been published in the Monthly Notices of the Royal Astronomical Society.

Our Milky Way Galaxy hosts around 200 globular clusters right now. While the Sparkler galaxy is named for its two dozen orbiting globular clusters, "The Sparkler" offers a rare glimpse into the formation history of the Milky Way during its early stages. Globular clusters are the dense collections of approximately one million stars providing valuable information in this regard, the Royal Astronomy Society report suggested.

Some scientists from the USA analyzed the age and metallicity distribution of a dozen of the compact star clusters surrounding "The Sparkler" and found that they resemble youthful versions of the clusters that currently surround the Milky Way. Some of these clusters have ancient formation ages and are metal-rich, similar to those found in the bulge of the Milky Way, leading the researchers to conclude that they are likely globular clusters. The study was spearheaded by Professor Duncan Forbes of Swinburne University in Australia and Professor Aaron Romanowsky of San Jose State University in the USA.

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“We appear to be witnessing, first hand, the assembly of this galaxy as it builds up its mass – in the form of a dwarf galaxy and several globular clusters” Professor Forbes said.

More about Sparkler Galaxy

"The Sparkler" is located in the constellation of Volans in the southern sky. It and its system of globular clusters have been identified at a redshift of 1.38, indicating that we are witnessing the galaxy approximately 9 billion years ago, around 4 billion years post the Big Bang. However, the Sparkler is currently 3 percent the mass of the Milky Way, hence it is expected to grow over cosmic time.

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First Published Date: 13 Feb, 18:45 IST