Hubble observed this cluster in the past, but JWST has now unveiled previously unseen aspects of El Gordo through its infrared capabilities.
One of the most remarkable features seen in Webb's image is "El Anzuelo", or "The Fishhook". El Anzuelo is a galaxy located 10.6 billion light-years away from Earth.The reddish hue of El Anzuelo arises from two factors: firstly, the presence of dust within the galaxy, and secondly, its significant distance, which causes cosmological redshift effects on the light waves.
Scientists also gained some insights into the history of star formation in the El Anzuelo galaxy. The powerful telescope was able to peer through the dust veils to image the galaxy’s center, where it observed thatOne remarkable feature of this cluster is the elongated, slender line that extends to the left of its center.
Furthermore, the discovery of a single red giant star nicknamed Quyllur stood out in Webb's observations. This is the first single red giant star spotted beyond one billion light-years from Earth. Hubble has previously identified lensed stars, but all of them were noted to be blue supergiants. Two of the most prominent features in the image include the Thin One, highlighted in box A, and the Fishhook, a red swoosh highlighted in box B.The other features in the image include five multiple-lensed galaxies, which could be a young galaxy cluster that formed around 12.1 billion years ago.
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