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Astronomers Discover One of the Oldest and Densest Brown Dwarfs Orbiting an Ancient Milky Way Star Harvard-Smithsonian Team Reports Rare Brown Dwarf Discovery Astronomers from the Harvard-Smithsonian Centre for Astrophysics (CfA) , together with international partners, have announced the discovery of a powerful new brown dwarf roughly 60 times heavier than Jupiter . The object, named TOI-7019 b , orbits a star belonging to the Milky Way's ancient thick disk . The discovery is outlined in a study published on 5 December on the arXiv preprint server. Readers following major breakthrough in astronomy and space science can find related discoveries and cosmic research coverage at FSNews365 , which regularly reports on astrophysics and exoplanet science. In Between Planets and Stars Why Brown Dwarfs Are So Unusual Brown dwarfs (BDs) occupy a curious middle ground between planets and stars , with masses ranging from 13 to 80 times that of Jupiter , or roughly 0.012 to 0.076 solar masses...

JWST May Unveil 'Dark Dwarfs': First Stars Powered by Dark Matter at Our Galaxy's Core Celestial bodies termed "Dark Dwarfs" may lie concealed at the heart of our galaxy, potentially offering crucial insights into one of cosmology's greatest enigmas — dark matter . A New Class of Celestial Bodies: Dark Dwarfs Discovery and Terminology A team of researchers from the UK and Hawaii has, for the first time, described these objects in a paper published in the Journal of Cosmology and Astroparticle Physics . The study outline how their existence might be confirmed using current instruments such as the James Webb Space Telescope. The paper is entitled " Dark Dwarfs: Dark Matter-Powered Sub-Stellar Objects Awaiting Discovery at the Galactic Centre. " The Anglo-American research team coined the term "Dark Dwarfs" —not due to the objects lack of luminosity, but owing to their unique association with dark matter, a central focus in modern cosmology a...

Webb Telescope Identifies First Potential Young Brown Dwarfs Beyond the Milky Way Introduction to NGC 602 and Its Cosmic Environment Near the outer regions of the small Magellanic Cloud, situated ap proximately 200,000 light-years away from Earth, the young star cluster NGC 602 is found in a cosmic environment reflecting early-universe conditions, with low concentrations of elements heavier than hydrogen and helium. Active Star Formation in NGC 602 The  presence of dark clouds of dense dust and abundant ionized gas within the cluster  points to ongoing star formation. Cou pled with HII region N90, containing clouds of ionized atomic hydrogen, this cluster offers a unique o p portunity to study star formation in conditions vastly different from those near the solar system. Discovery of Young Brown Dwarfs An international collaboration of astronomers, including Peter Zeidler, Elena Sabbi, Elena Manjavacas, and Antonella Nota, observed NGC 602 using Webb and identified candidates...

Unveiling Gliese 229B: The First Brown Dwarf Binary System Discovered Introduction to Gliese 229B Gliese 229B, the first identified brown dwarf, has been the subject of extensive research since Caltech scientists discovered it in 1995. Yet, the per plexing question of why it is dimmer than ex pected for its mass endures. What are Brown Dwarfs? Brown dwarfs have masses between those of stars and gas giants like Ju piter. Des pite astronomers estimating Gliese 229B's mass to be 70 times that of Ju piter, its observed brightness is unex pectedly low for an object of this size. The Breakthrough Discovery An international team of astronomers led by Caltech has finally resolved the mystery: Gliese 229B is, in fact, a close binary system of two brown dwarfs, with masses of 38 and 34 times that of Ju piter, orbiting each other every 12 days. Their combined luminosity aligns with the ex pected brightness for two small brown dwarfs of this size. Insights from Researchers "Gliese 229B w...