This eye-catching satellite photo shows Simushir, a little-known Russian island and former Soviet naval base, featuring four end-to-end volcanoes that are evenly spaced and in a surprisingly straight ...

A volcanic eruption in southwest Iceland began Monday night after weeks of intense seismic activity. This marked the the first time in 50 years that a largely populated area had to be fully evacuated ...

The feature may have developed as rising magma stretched and cracked the planet's crust, the European Space Agency said Reading time 1 minute A high-resolution camera system aboard the Mars Express ...