Ultra-Faint Dwarf Galaxies Could Unlock Secrets of the Early Universe

High-resolution cosmological simulations show ultra-faint dwarf galaxies are highly sensitive to early-Universe conditions.

Unlike larger galaxies, their properties change markedly depending on how the Universe evolved at its beginning.

This makes these tiny Local Group galaxies promising probes of primordial cosmic conditions and star formation.

Studying Milky Way satellite dwarfs could help reconstruct how the early Universe shaped galaxy formation.