sentences:  In the 19th century, many impoverished people left the Kohlbach valley and emigrated to the United States, mainly to Ohio.In the late 20th century, Jerry L. Ross, a descendant of the emigrants, discovered his Dittweiler roots.Ross was a NASA astronaut, and eventually, he took the Dittweiler municipal flag with him into space on mission STS-55 (also called mission D-2; Space Shuttle "Columbia"; 26 April 1993 – 6 May 1993) on which he was a Mission Specialist (the mission had another German connection