How do dwarf galaxies contribute to the growth of larger galaxies according to recent findings from India's ASTROSAT mission?

Based on ASTROSAT's groundbreaking observations of 11 distant dwarf galaxies, researchers have discovered that these smaller galactic structures play a crucial role in galaxy evolution through active star formation processes. The data reveals that dwarf galaxies form on the periphery of larger galactic systems and gradually spiral inward toward the visible boundary of their host galaxy. This migration process occurs over approximately a billion-year timescale, during which the dwarf galaxies contribute significantly to the overall growth and mass accumulation of the larger galaxy. These findings challenge existing models of galaxy formation and provide new insights into how cosmic structures assemble and evolve over billions of years.