Sunny Skies Over Arctic Sea Ice

Sunny Skies Over Arctic Sea Ice

Clear skies allowed the Moderate Resolution Imaging Spectroradiometer (MODIS) on NASA's Terra satellite to collect this largely unobstructed view of the Arctic in early July 2011.

Lava Flows at Nabro Volcano

Lava Flows at Nabro Volcano

At the Nabro Volcano in the East African nation of Eritrea, the flow of lava comes to life in this striking satellite image viewed with the infrared portion of the light spectrum.

Flooding Along the Souris River

Flooding Along the Souris River

On Sunday, June 26, the Souris River crested in Minot, N.D., with flooding reaching depths of 14 feet in some places. Rising more than four feet in just 18 hours on Friday, June 24, the river flooded some 4,000 homes as it raged through the city at a rate of 27,600 cubic feet per second, five times the fastest rate recorded during the last three decades.

Wildfire Smoke Hangs Over Atlantic Ocean

Wildfire Smoke Hangs Over Atlantic Ocean

Smoke from fires in Georgia and Florida streamed eastward over the Atlantic Ocean on June 15, 2011. The Moderate Resolution Imaging Spectroradiometer (MODIS) sensor on NASA's Aqua satellite captured this natural-color image the same day.

Aqua Satellite Captures Massive Arizona Wildfires

Aqua Satellite Captures Massive Arizona Wildfires

The Wallow Fire was started by human activity on May 29, and the wind-fueled inferno has become the second-largest fire in Arizona history. By the end of the day on June 9, the massive fire had reached 386,690 acres (609 square miles or 157,701 hectares) and had burned 29 and threatened 5,242 homes.

Iceland's GrímsvötnVolcano Erupts

Iceland's GrímsvötnVolcano Erupts

A year after Iceland's Eyjafjallajökull volcano spewed ash and steam miles into the air and disrupted global air traffic for days, NASA's Terra satellite captures another Iceland volcano rumbling to life.

Onekotan Island, Kuril Islands, Russian Federation

Snow cover highlights the calderas and volcanic cones that form the northern and southern ends of Onekotan Island, part of the Russian Federation in the western Pacific Ocean. Calderas are depressions formed when a volcano emptiesits magma chamber in an explosive...