By Ashley Strickland, CNN (CNN) — An unusual collection of stars may represent the remnants of a dwarf galaxy that the Milky Way devoured about 10 billion years ago. Astronomers have dubbed the ancient galaxy Loki, after the Norse god of mischief. The finding could change the current understanding of how the Milky Way evolved By Ashley Strickland, CNN (CNN) — An unusual collection of stars may represent the remnants of a dwarf galaxy that the Milky Way devoured about 10 billion years ago. Astronomers have dubbed the ancient galaxy Loki, after the Norse god of mischief. Th... [7700 chars]