The document summarizes space travel through the decades from the 1950s to 2000s in several paragraphs. It describes how the Cold War drove the initial space race between the US and Soviet Union in the 1950s. The 1960s saw the first human orbital flights by both countries. The 1970s saw the launch of the first space station by the Soviets and plans by the US for a reusable space shuttle. The 1980s marked the end of the Cold War space rivalry. Finally, the document discusses how nanotechnology in the 2000s holds the potential to revolutionize space travel and living.