On a clear, sunny day, the sky above us often glows a brilliant blue, a sight so commonplace ... When the Sun is low on the horizon, its light must pass through a thicker layer of the atmosphere.

This puzzle will put your eyesight to the ultimate test as it challenges you to spot an airplane that has seemingly ...

AND WE HAVE SOMETHING ELSE REALLY COOL GOING ON IN THE SKY LATER ON THIS WEEK. AND IT’S GOING TO BE CLEAR TO SEE ... will be just above the western horizon. The easiest to spot of the bunch ...