The Telltale Signs Of A Volcano Preparing To Erupt

The Mayon volcano in the Philippines has erupted nearly 40 times in 400 years, and it looks primed to go off again. This NASA satellite image shows a small plume of ash or steam blowing west from its summit. » 12/17/09 2:00pm 12/17/09 2:00pm

NASA Volcano Image Shows Atmospheric Shockwave

On June 12th, Saychev Peak on Matua Island erupted, hurling ash and steam into the air. Luckily, NASA's International Space Station was watching. This stunning image, from the Earth Observatory, reveals some rare details about this eruption. » 6/22/09 3:00pm 6/22/09 3:00pm