A few clouds in the wind, a plane leaving its trail, birds so high that they are only black dots, rather simple, isn't it? And yet, we all love to watch for hours during the mood changes of this beautiful environment. Photography expresses the strong feelings of anger, serenity, or anxiety reflected in the sky. During the day, it reflects our unpredictable earthly life; at night, the starry sky illuminates our mysteries. The power of photography is to capture this energy, to sublimate it and give it all the space it requires. You too, explore this bluish environment.