How did a satellite galaxy of the Milky Way come to be? Physicists offer an explanation - Phys.org
phys.orgSubmitted by physorg8953 in science
Crater 2, located approximately 380,000 light years from Earth, is one of the largest satellite galaxies of the Milky Way. Extremely cold and with slow-moving stars, Crater 2 has low surface brightness. How this galaxy originated remains unclear.