General
NASA International Space Apps Challenge
NASA (with international space agency partners)
The world's largest annual space-themed hackathon, where participants of any age or background form teams over a single weekend to build solutions to real challenges posed by NASA and space agency partners. It's free to join, fully open to the public, and run simultaneously at local host events worldwide and virtually.
📍 Global (in-person local events and virtual participation)UnpaidEasy
