During spaceflight , there have been five incidents in which a spacecraft in flight suffered crew fatalities, killing a total of 15 astronauts and 4 cosmonauts. Of these, two had reached the internationally recognized
edge of space (100 km or 62mi above sea level) when or before the incident occurred, one had reached the U.S. definition of space at 266,000 ft, and one was planned to do so. In each of these accidents, the entire crew was killed. , a total of 791 people have flown into space and 19 of them have died in related incidents. This sets the current statistical fatality rate at 2.4 percent.
NASA astronauts who died on duty are memorialized at the
Space Mirror Memorial at the
Kennedy Space Center Visitor Complex in
Merritt Island, Florida. Cosmonauts who died on duty under the
Soviet Union were generally honored by burial at the
Kremlin Wall Necropolis in
Moscow. No Soviet or Russian cosmonauts have died during spaceflight since 1971.
During training or testing In addition to accidents during spaceflights, 11 astronauts, test pilots, and other personnel have been killed during training or tests. ==Non-fatal incidents during spaceflight==