JWST may have detected the universe’s first stars in a lensed source (LAP1‑B)

NASA’s James Webb Space Telescope may have detected the Universe’s first stars in a source labelled LAP1‑B, combining JWST’s deep infrared sensitivity with roughly 100× gravitational magnification from an intervening galaxy cluster. The signal would be otherwise too faint for direct detection without extreme lensing.

Discovered 2025-11-18T14:12:16.869410-08:00 | 2025-11-18T14:12:16.869410-08:00

Briefing

What Hype is tracking

If confirmed, the candidate in LAP1‑B leverages JWST sensitivity plus ~100× gravitational lensing to probe Population III–era star formation, directly impacting models of the Cosmic Dawn. See JWST's long-wavelength MIRI observations: https://hype.aero/?story=cb558697-d456-4b6f-a8c7-fff511c19e73
The result validates the discovery-plus-follow-up approach that pairs wide-field surveys with JWST deep imaging — a strategy highlighted by the synergy between Rubin and JWST for early‑universe science: https://hype.aero/?story=dfc208c7-23f2-4ac8-b419-1b75f9ee3b2d
Ongoing programs that prioritize deep, targeted JWST campaigns (for example MINERVA) will use this type of candidate to set observing priorities and sharpen survey designs for Cosmic Dawn studies: https://hype.aero/?story=40d5e557-b815-4ef2-b362-ba495745e4bf

Reported By

New Scientist aasnova.org knowridge.com Scientific American Space.com