Star trails. Time-exposure image of star trails over trees. The north or polar star is seen at the centre of the circular trails. Star trails are formed by the apparent motion of the stars around the celestial pole as the Earth rotates. The differing colours of the trails are due to the different intrinsic colours of the stars themselves. Photographed over British Columbia,Canada | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Nunuk, David |
Bildgröße: | 4701 px × 3719 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |