Satellites by space agencies across the globe have trained their ‘eyes in the sky’ on Iceland and the erupting Eyjafjallajokull volcano. From their perch hundreds of miles above the Earth’s surface, these satellites can capture images of the volcano and its ash plume as it travels across northern and central Europe.

The ash cloud has now traveled hundreds of miles over northern Europe where it has created the biggest travel disruptions since the September 11th terrorist attacks. Thousands of flights have been cancelled and hundreds of thousands of passengers have been stranded across the world.

At Denver International Airport, United Airlines and British Airways cancelled their non-stop service to and from London’s Heathrow airport Saturday. This marks the third day in a row for the disruption.

• Related: ‘No end in sight’ as Iceland volcano eruption grows, flight cancelations increase (Examiner.com)

The volcanoes activity increased overnight and continues on Saturday. Eurocontrol, the European agency responsible for air travel over the continent, reports that 16,000 flights had been cancelled on Saturday. On a normal Saturday the organization would monitor 22,000 flights.

Satellite images in the slideshow below from NASA, the European Space Agency (ESA) and others provide an incredible look into the event.