The Milky Way makes little galaxies bloom, then snuffs them out
Dwarf spheroidal galaxies light up with newborn stars when first approaching our galaxy
![Leo I galaxy](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2020/11/110420_kc_milkyway_feat.jpg?fit=1028%2C579&ssl=1)
Leo I, the ghostly galaxy below the bright blue star Regulus, glittered with newborn stars while entering the Milky Way’s domain 2 billion years ago. The little galaxy is 880,000 light-years from Earth.
Chris Cook/Science Source