To mark the 40th anniversary of the Internet, DARPA has announced the DARPA Network Challenge, a competition that will explore the roles the Internet and social networking play in the timely communication, wide-area team-building, and urgent mobilization required to solve broad-scope, time-critical problems.
The challenge is to be the first to submit the locations of 10 moored, 8-foot, red, weather balloons at 10 fixed locations in the continental United States. The balloons will be in readily accessible locations and visible from nearby roads.

A $40,000 cash prize will be awarded to the first entrant to submit the latitude and longitude of all ten balloons.
| Announcement | October 29, 2009 |
| Registration Opens | December 1, 2009 |
| Balloons Launched | December 5, 2009 |
| Submission Deadline | December 14, 2009 |