- Associated Press - Saturday, April 12, 2014

HUNTSVILLE, Ala. (AP) - An annual engineering competition staged by NASA is under way in Huntsville with a new look.

NASA’s two-day Human Exploration Rover Challenge will conclude Saturday at the U.S. Space and Rocket Center.

Almost 90 student teams from 19 states, Puerto Rico and four other countries are racing human-powered vehicles over an obstacle course. The competition teaches students to solve engineering problems and challenges.

The event was called the “Great Moonbuggy Race” for two decades. The space agency retooled the race this year to look forward to the challenge of exploring the solar system rather than backward at the U.S. lunar landings in 1969 and the early ‘70s.

Teams build rovers that can roll over terrain included a simulated Martian surface.