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The unexpected discovery of the dwarf galaxy PEARLSDG, which is isolated and quiescent, challenges established views on galaxy evolution and highlights the capabilities of the James Webb Space Telescope in uncovering cosmic phenomena. (Artist’s concept.) Credit: SciTechDaily.com PEARLSDG, an isolated dwarf galaxy found by the James Webb Space Telescope, defies standard galactic evolution theories by not forming new stars, indicating a need to revise our understanding of galaxies. A team of astronomers, led by Arizona State University Assistant Research Scientist Tim Carleton, has discovered a dwarf galaxy that appeared in James Webb Space Telescope (JWST) imaging that wasn’t the primary...

Star Spaghettification Black Hole - This animation depicts a star experiencing spaghettification as it’s sucked in by a black hole during a ‘tidal disruption event’. Credit: ESO/M. Kornmesser Scientists hope to improve their understanding of the growth of supermassive black holes in massive galaxies by studying intermediate-mass black holes. After lurking undetected in a dwarf galaxy, an intermediate-mass black hole revealed itself to astronomers when it gobbled up an unlucky star that strayed too close. Known as a “tidal disruption event” or TDE, the violent shredding of the star produced a flare of radiation that briefly outshone the combined stellar...