High Quality Content by WIKIPEDIA articles! Space accidents, either during operations or training for spaceflights, have killed 22 astronauts (five percent of all people who have been in space, two percent of individual spaceflights), and a much larger number of ground crew. This article provides an overview of all acknowledged fatalities and near-fatalities that occurred during manned space missions, accidents during astronaut training and during the testing, assembling or preparing for flight of manned and unmanned spacecraft. Not included are fatalities occurring during ICBM accidents, and Soviet or German rocket-fighter projects of World War II. Also not included are alleged Soviet space accidents that were not reported by the Soviet Union and are not believed to have occurred by mainstream historians.