Europe has so many grounded planes, which means skies less congested by contrails. Between that and the volcanic ash, sunsets have become extraordinary.
Spaceweather hosts tons of pictures, and had the following on their website this morning:
Hard and sharp-edged volcanic dust is hazardous to aircraft, clogging engines that suck it in, and pitting windows that pilots need to see through. According to Eurocontrol, the intergovernmental body that manages European air travel, about 16,000 flights across Europe have been canceled. Stranded passengers have one consolation--sunrises and sunsets of rare beauty. Browse the links below for examples.
volcanic sky shots: from
René of Schiphol, Amsterdam, Netherlands; from
Manuel ten Hake of Zoetermeer, The Netherlands; from
Vincent Phillips of Speke, Liverpool, England; from
Toine Kuiper of Leende, Netherlands; from
Jeffrey Berkhout of Nibbixwoud, Netherlands; from
Katie-Anne Fitzgerald of Belton North Lincolnshire UK; from
Alan C Tough of Elgin, Moray, Scotland.