Samantha Mathewson joined Space.com as an intern in the summer of 2016. She received a B.A. in Journalism and Environmental Science at the University of New Haven, in Connecticut. Previously, her work has been published in Nature World News.
The dwarf irregular galaxy I Zwicky 18 lies at the center of this image. The bright region of white and blue stars at the galaxy’s core appear as two distinct lobes, representing different periods of star formation.Marvel at the James Webb Space Telescope's largest image of the cosmos yet
Wispy brown filaments surround the central starburst region in the new JWST photo. These filaments represent bubbles of gas that have been heated by stellar winds and intense ultraviolet radiation unleashed by hot, young stars, according to aobservations of I Zw 18 revealed fainter, older red stars within the galaxy, suggesting its star formation started at least one billion years ago — possibly as much as 10 billion years ago.
The recent image, which was released on March 26, was taken as part of an initiative to study the life cycle of dust in I Zw 18. Building on the observations taken by Hubble at optical wavelengths, the JWST is able to study the dwarf galaxy in greater detail at infrared wavelengths. "This galaxy is of particular interest as its content of elements heavier than helium is one of the lowest of all known galaxies in the local," ESA officials said in the statement."Such conditions are thought to be similar to those in some of the first star-forming galaxies at high, so the Webb study of I Zw 18 should shed light on the life-cycle of stars and dust in the early universe.
When not writing or reading about science, Samantha enjoys traveling to new places and taking photos! You can follow her on Twitter @Sam_Ashley13.
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