NASA centennial challenges :

The NASA Centennial Challenges is a program that aims to stimulate innovation and creativity in the fields of science, technology, engineering, and mathematics (STEM) by offering cash prizes for solving specific technical challenges related to space exploration. The challenges are open to anyone, including individuals, student teams, private companies, and nonprofit organizations. Some of the past challenges include developing autonomous robots for lunar exploration, designing lightweight habitats for deep space missions, and building advanced 3D-printed habitats for Mars. These challenges encourage participants to develop breakthrough technologies that can advance NASA's mission and benefit society as a whole.