Starwatch: Count these stars to find out how dark the sky is where you are

Great Square of Pegasus’s four corners are widely visible, but its inner stars provide a useful indicator of darkness This week, we are going to locate the Great Square of Pegasus and count stars to see how dark your sky is.

The chart shows the view looking south from London at 2000 GMT on 9 November. High in the sky is the Great Square of Pegasus, a distinctive pattern of four stars that marks the body of the…