Story perspectives
Dwarf Galaxies Key to Early Universe's Reionization, Study Finds
10/5/2025
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Story summary
- New research shows dwarf galaxies contributed to reionization in early Universe, using Hubble and James Webb Space Telescopes.
- Astrophysicist Iryna Chemerynska stresses ultra-faint galaxies' role in the Universe's history.
- Dwarf galaxies outnumber larger ones 100 to 1 and emit four times the ionizing radiation.
- The study centered on Abell 2744, using cosmic lensing; Nature published it, with plans to expand.
