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James Webb Telescope Little Red Dots

Little Red Dots: James Webb Telescope Reveals Ancient Seeds of Galaxies and Black Holes Webb's Early Glimpse into the Birth of Galaxies When the James Webb Space Telescope (JWST) commenced operations, one of its first missions focused on studying galaxies formed in the infancy of the universe. By December 2022, the telescope detected several mysterious "little red dots" (LRDs) , sparking curiosity about their true nature. Although most researchers now believe these compact entities are ancient galaxies, their composition — and the reason for their striking redness — remains uncertain. According to one theory, known as the "stellar-only" hypothesis , the colour results from dense concentrations of stars and cosmic dust. This suggests that these objects may resemble the " dusty galaxies " seen in the present-day universe. Conversely, the "MBH and galaxy" theory argues that LRDs represent early forms of active galactic nuclei (AGNs) , which p...

james webb lynds 483 star formation

James Webb Telescope Unveils L483: A Detailed Look at Star Formation in Near-Infrared Introduction: Unveiling L483 through Webb's High-Resolution Imagery NASA/ESA/CS James Webb Space Telescope captures detailed high-resolution near-infrared images of Lynds 483 (L483), revealing the structure of two actively forming stars ejecting gas and dust in vibrant hues of orange, blue and purple. The Dynamic Evolution of Protostars and Their Ejections Protostars Expelling Gas and Dust Over millennia, the central protostars have intermittently expelled gas and dust, generating high-velocity jets and slower outflows that traverse space. When newer ejections encounter older ones, their interaction created intricate distortions influenced by varying densities. Chemical Reactions and Molecular Formation Prolonged chemical processes within the expelled material and the surrounding cloud have facilitated the emergence of complex molecules, including carbon monoxide, methanol, and various organic com...