Star trails and aeroplane trails. Star trails are formed by the apparent motion of the stars in the sky as the Earth rotates on its axis. In the northern hemisphere,these concentric trails form around the north celestial pole. The straight trails of light are formed by aeroplanes. A layer of fog obscures city lights on the plains,with this view obtained while looking out over the Swiss Plateau,the most densely populated region of Switzerland | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Alean, Dr. Juerg |
Bildgröße: | 5126 px × 3417 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |