An erupting Alaskan volcano shot ash plumes so high into the air that astronauts on board the International Space Station were able to capture the activity in crisp, detailed photographs.
Pavlof Volcano -- located in the Aleutian Arc about 625 miles southwest of Anchorage -- erupted on May 13, spewing lava and generating an ash cloud that reached 22,000 feet high. Pavlof is one of the most active volcanos in the United States, with nearly 40 known eruptions.
While the majority of the plumes were released over the weekend, U.S. Geological Survey scientists told the Associated Press Thursday that the volcano is still rumbling, and seismic instruments continue to register tremors. Flights in the area have also been cancelled.
Astronauts snapped these images from 475 miles south-southeast of the volcano on May 18 using a Nikon D3S digital camera.
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