NASA - National Aeronautics and Space Administration

Aspen Fire, Arizona

Since June 10, 2003, the Aspen Fire has been burning in the Catalina Mountains roughly 17 miles (27 km) northeast of Tucson, Arizona. Fueled by the dry vegetated landscape around Mount Lemmon and fanned by gusty desert winds, the wildfire intensified and spread rapidly, consuming more than 25,000 acres and at least 300 homes and businesses in a two-week span. The cause of the fire is not known, but some officials suspect it was triggered by a lightning strike. Some 1,200 firefighters are currently battling the blaze and they estimate it was about 25 percent contained when the above image was taken from aboard a NASA high-flying ER-2 Aircraft.