"Discovery: Vast Stellar Halo Encircling Ark 227 Galaxy Unveiled by Astronomers"
Astronomers using the James Webb Space Telescope (JWST) have discovered an extended stellar halo surrounding the dwarf galaxy Ark 227. The halo consists of one or possibly two accretion shelves, indicating that Ark 227 experienced minor mergers with smaller galaxies. The observations also revealed the presence of an ultra-faint dwarf galaxy associated with Ark 227. Further observations are needed to confirm the existence of additional accretion shelves and to explore the potential presence of more ultra-faint dwarf galaxies in Ark 227's stellar halo.