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Khabre desk
Recent reporting, analysis and explainers from the cosmology desk.
science
JWST observations show that the distant cluster XLSSC 122 strongly lenses light from more distant galaxies, making it the most distant known galaxy cluster with this effect. The team also found an unusually concentrated mass distribution, a result that challenges predictions from conventional cosmological models.
science
NASA says Hubble completed its 200,000th orbit around Earth on Sept. 19, 2026, the same day it imaged galaxy cluster MACS J0417. The observatory is making repeated observations as astronomers anticipate a lensed reappearance of supernova Athena.
science
A new set of cosmological radiation-hydrodynamic simulations shows that heavy black hole seeds of about a million solar masses form naturally in dense protocluster regions, undergo a super-Eddington accretion phase that reproduces the spectral features of little red dots, and then grow into the overmassive black holes observed by the James Webb Space Telescope.
science
ESA says Euclid has identified 31 quasars from the early Universe, including two at redshifts 7.77 and 7.69—the most ancient quasars yet observed.
science
ESA reports that Euclid has identified 31 quasars from the early Universe, including two with redshifts of 7.77 and 7.69 that were observed when the Universe was about 670 million years old.