original: It was discovered in 1949 by Walter Baade.
simplifications: It was found in 1949 by Walter Baade. Discovered by Walter Baade in 1949. Walter Baade found it in 1949. It was discovered in 1949 by Walter Baade. It was found in 1949 by Walter Baade. It was discovered by Walter Baade in1949. Walter Baade found it in 1949. Walter Baade discovered it in 1949. It was found in 1949 by Walter Baade. It was discovered by Walter Baade in 1949.