What is the NASA return on investment for its space exploration missions?

The return on investment for NASA's space exploration missions is difficult to quantify in monetary terms, as the benefits are wide-ranging and not solely financial. Some of the returns include technological advancements, scientific discoveries, inspiration for future generations, and economic growth through innovation and job creation. NASA's missions have also led to the development of new technologies that have practical applications in various industries, contributing to overall societal progress.