As most of you probably know, a volcano has gone off in Iceland, grounding all planes in most of Northern Europe.
Apart from a lot of quite funny jokes about people trying to pronounce the volcano's name, and about sending Iceland money to turn the volcano off (let's face it those Icelanders deserve a laugh) that means eerily quiet skies over London, and this shot of the Moon and what I presume to be Venus with no contrails at all.
The ash is invisible from the ground (the problem, as I understand it, is that if you fly a jet engine into what is in effect a fine mist of ground glass at 30,000 feet, the plane may be able to make an emergency landing, but even if it does it will never fly again.) Here's Venus. I think she's sort of crescent-shaped, to a willing mind, and in the same direction as the Moon.