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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...

Auroras on a Rogue Planet: James Webb Spots Dazzling Weather Beyond Our Solar System edited by  Fasi Uddin, 27 September 2025 In an unprecedented discovery, astronomers at Trinity College Dublin have reported aurora-like activity on a rogue planet wandering through space. Using the cutting-edge NASA/ESA/CSA James Webb Space Telescope (JWST) , the team observed shimmering atmospheric phenomena on SIMP-0136 , a hot and restless world unbound to any star. This marks a milestone in exoplanet weather science , offering new insights into alien atmospheres and the extreme conditions shaping them. A Cosmic "Weather Report" Like No Other Unlike Earth's daily forecasts, the "weather" on SIMP-0136 is written in fire and storms, Astronomers tracked faint fluctuations in brightness as the planet rotated, revealing subtle atmospheric shifts. These signals allowed the team to map temperature, cloud distribution and chemical composition in remarkable detail. Dr. Evert Nasedki...

NASA and Chilean Scientists Study 3I/ATLAS, A Comet That Breaks the Rules Interstellar visitors are rare guests in our Solar System , but when they appear they often rewrite the rules of astronomy. Such is the case with 3I/ATLAS , a fast-moving object that has left scientists puzzled with its bizarre behaviour. Recent findings from NASA and Chilean researchers reveal that this comet-like body is expelling an unusual plume of nickel — without the iron that typically accompanies it. The discovery challenges conventional wisdom about how comets form and evolve, sparking both excitement and controversy across the scientific community. A Cosmic Outsider: What Is 3I/ATLAS? The object 3I/ATLAS —the third known interstellar traveler after "Oumuamua (2017) and 2I/Borisov (2019) —was first detected in July 2025 by the ATLAS telescope network , which scans he skies for potentially hazardous objects. Earlier images from Chile's Vera C. Rubin Observatory had unknowingly captured it, but ...

JWST's Stunning Discovery: Massive Spiral Galaxy in the Young Universe Discovery of A2744-GDSp-z4: A Grand-Design Galaxy Observed with JWST Astronomers from India have announced the discovery of a grand-design galaxy observed with the James Webb S pace Telesco pe (JWST). Designated as A2744-GDS p-z4, the galaxy stands out for its substantial size and mass. The findings were shared in a December 6  publication on the arXiv   pre- print server. Understanding Grand-Design Spiral Galaxies What Makes a Grand-Design S piral Galaxy? Grand-Design s piral galaxies are distinguished by their striking, well-structured arms that extend outward from a distinct central core. These arms are believed to be regions of higher density within the disk, where incoming material com presses, triggering star formation. The Emergence of S piral Galaxies in the Early Universe The timing and mechanisms behind the emergence of s piral galaxies in the early universe remain  poorly understood, as such...

Astronomers Unlock the Mystery of Compound Gravitational Lensing by Two Galaxies Introduction of Gravitational Lensing Astronomers from an international team have discovered two galaxies aligned in a way that their gravitational forces create a compound lens. Their study has been  published on arXiv. Previous Research on Gravitational Lensing Gravitational Lensing: Gravitational Lensing occurs when the gravitational field of a massive object, like a galaxy, bends light from a more distant object, such as a quasar. Previous Research: Earlier investigations have identified galaxies or galaxy clusters bending light in alignment with predictions from Einstein 's general relativity. Astronomers observe that such lenses im perfectly distort the light behind them in intriguing  patterns. Discovery of a Compound Lens Elli ptical Galaxies as Lenses Elli ptical galaxies have been observed by some researchers to function as lenses, am plifying the light form objects behind them. What ...