You might be able to see the so-called 'smiley face' if you're just at the right spot. But this facial feature will only have a passing resemblance to a smile, as Venus and Saturn will shine next to the horns of the brightly-lit crescent Moon.

There are a lot of things in Earth's night sky, and every now and again, they line up in such a way to give us all a little bit of a giggle. On the nights of Thursday 24 and Friday 25 April, just such an alignment is going to take place,