NASA tweeted: The International Space Station turned 20 years old today as the crew unpacked the newest U.S. and Russian cargo ships. Zarya was the first station module launched to space on Nov. 20, 1998. https://go.nasa.gov/2Dz0Uil

President Ronald Reagan on the ISS

State of the Union Address January 25, 1984

Our second great goal is to build on America’s pioneer spirit…and that’s to develop that frontier. A sparkling economy spurs initiatives, sunrise industries and makes older ones more competitive.

Nowhere is this more important than our next frontier: space. Nowhere do we so effectively demonstrate our technological leadership and ability to make life better on Earth. The Space Age is barely a quarter of a century old. But already we’ve pushed civilization forward with our advances in science and technology. Opportunities and jobs will multiply as we cross new thresholds of knowledge and reach deeper into the unknown.

Our progress in space, taking giant steps for all mankind, is a tribute to American teamwork and excellence. Our finest minds in government, industry and academia have all pulled together. And we can be proud to say: We are first; we are the best; and we are so because we’re free.

America has always been greatest when we dared to be great. We can reach for greatness again. We can follow our dreams to distant stars, living and working in space for peaceful, economic, and scientific gain. Tonight, I am directing NASA to develop a permanently manned space station and to do it within a decade.

A space station will permit quantum leaps in our research in science, communications, and in metals and lifesaving medicines which could be manufactured only in space. We want our friends to help us meet these challenges and share in their benefits. NASA will invite other countries to participate so we can strengthen peace, build prosperity, and expand freedom for all who share our goals.

Just as the oceans opened up a new world for clipper ships and Yankee traders, space holds enormous potential for commerce today. The market for space transportation could surpass our capacity to develop it. Companies interested in putting payloads into space must have ready access to private sector launch services. The Department of Transportation will help an expendable launch services industry to get off the ground. We’ll soon implement a number of executive initiatives, develop proposals to ease regulatory constraints, and, with NASA’s help, promote private sector investment in space.