A research team led by Case Western Reserve University astronomers has found a never-before seen cloud of ionized gas associated with the Whirlpool Galaxy, also known as Messier 51a, M51a and NGC 5194, an interacting grand-design spiral galaxy located in the constellation Canes Venatici, about 26 million light-years away. The discovery, reported in the Astrophysical Journal Letters (arXiv.org preprint), provides astronomers with an unexpected ‘front...