Crowdsourcing is becoming an increasingly important tool for innovation at NASA. It allows NASA to tap into new communities and individuals to generate ideas. Examples of successful crowdsourcing programs include Disk Detective, where over 28,000 volunteers helped analyze telescope data and were credited as co-authors on research papers, and the International Space Apps Challenge, a hackathon where thousands of apps have been developed using NASA data. Crowdsourcing challenges like the Space Poop Challenge generate novel solutions to technical problems from experts in non-space fields. NASA also uses citizen forums to gauge public views on initiatives to inform their work.