Clouds of ash from Iceland's Eyjafjallajokull volcano are blowing across Europe again, closing airports and causing fantastic sunsets. Vincent Phillips sends this picture, taken May 7th from Hale Village near Liverpool, England:

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© Vincent Phillips Hale Village near Liverpool, England
"Volcanic ash from Iceland continues to influence our skies here in the UK, and as a massive ash cloud now gathers off the coast of Ireland, there could be many more fantastic volcanic sunsets and sunrises in the days ahead," says Phillips.

Readers, you can track the progress of the volcanic plume using data from space. The OMI instrument on NASA's Aura satellite measures sulfur dioxide emissions from the volcano, which researchers turn into near-realtime maps, When a plume is passing near your location, that is the time to be especially alert for volcanic sunsets.