In the UK the event is being hosted in Exeter, York, Glasgow, London and Leicester. You must register (for free) at the appropriate centre:
• Science Museum, London: https://2014.spaceappschallenge.org/location/london/
• Strathclyde Uni: https://2014.spaceappschallenge.org/location/glasgow/
• Met Office, Exeter: https://2014.spaceappschallenge.org/location/exeter/
• Dock, Leicester: https://2014.spaceappschallenge.org/location/leicester/
• and for York Uni see http://www.meetup.com/UK-Hackathons-and-Jams/events/169562892
The International Space Apps Challenge, now in its third edition, is the world's biggest hackathon ever. This is the result of an international collaboration between NASA and its partners, such as the Met Office in the UK. Last year it attracted over 9000 simultaneous participants from over 50 locations on the globe.
Participants get a chance to develop innovative solutions to improve life on and Earth and in space by tackling several real-world challenges. This year, these fall under themes such as: Earth watch, technology in space, human spaceflight, robotics and asteroids. In addition, data visualisation and educational challenges will cut across all five themes. Further details on challenges are available at: https://2014.spaceappschallenge.org/challenge/ .