If aliens visited Earth in the remote past, could they have given us advanced technology, passed down through human history? And could this technology have helped the Third Reich build mysterious weapons and crafts far beyond the limits of 20th century science? When German aerospace engineer Wernher von Braun joined the U.S. military and space programs after WWII, he quickly became one of the foremost scientists credited with developing the ballistic missile, the first American satellite and the enormous Saturn V rocket. But how is it that von Braun was so far ahead of everyone? NASA scientists, former astronauts and secret government files all point to the conclusion that there has been contact with extraterrestrial life in the past. Russia is the home of "cosmism", a belief that human civilization originated in the cosmos and is destined to return to space. Some theorists suggest that otherworldly visitations predate the establishment of the Russian nation.