NASA Astronaut Group 21 eight people, Jessica Meir, Ph.D., Major Nicole Mann, Lt. Commander Josh Cassada, Ph.D., Lt. Colonel Tyler Hague, Cristina Hammock, Major Andrew Morgan, M.D., Lt. Commander Victor Glover, and Major Anne McClain. On April 9, 1959 the National Aeronautics and Space Administration (NASA) announced the finalists for Astronaut Group 1. This group of seven astronauts, also sometimes known as the "Original Seven" or the "Mercury Seven" were a part of the first human spaceflight program, called Project Mercury. Since the original group, the total number of astronaut groups has grown to 22 as of 2017. The class joined 47 other active
Group of Seven the United States to a summit in Château de Rambouillet; the annual meeting of the six leaders was organized under a rotating presidency, forming the Group of Six (G6). In 1976, with Wilson out as prime minister of Britain, Schmidt and Gerald Ford felt an English speaker with more experience was needed, so Pierre Trudeau, the Prime Minister of Canada, the next largest advanced economy after the first six, was invited to join the group and the group became the Group of Seven (G7). Since first invited by the United Kingdom in 1977 the European Union has been represented by