the cosmonaut cover-up ne demek?

"The Cosmonaut Cover-Up" is a conspiracy theory that suggests the Soviet Union sent a manned mission to space before Yuri Gagarin's historic flight in 1961 but covered it up due to its failure. The theory originated in the 1970s and gained traction after the fall of the Soviet Union. The alleged mission, known as "The Lost Cosmonauts," was said to have included one or more cosmonauts who died during the mission, and their deaths were covered up by the Soviet government to maintain the country's image as a leader in space exploration. Despite numerous investigations and evidence to the contrary, the theory remains popular among some conspiracy theorists. However, it is widely considered to be unsupported by the available evidence and dismissed by mainstream historians and experts in the field of space exploration.