Iceland Volcano's Massive Ash Plume As Seen From Space (PHOTOS)

The ash plume from Iceland's Eyjafjallajokull Volcano drifted eastward Thursday, halting European air traffic as it traveled across what the AP calls "the most congested airspace in the world."

Eyjafjallajokull, dormant since 1820, erupted on March 21 and remained active. On April 14, in anticipation of a second eruption, authorities evacuated the Eyjafjallajokull area.

Several of NASA's satellites captured images of the volcanic activity, among them Terra's Moderate Resolution Imaging Spectroradiometer (MODIS) and EO-1's Advanced Land Imager (ALI).

View our slideshow (below) of the volcanic events since March 24. Also, click here to see spectacular, raw footage of the event from the ground and birds-eye shots of the plumage.