Aurora Borealis or Northern Lights. Caused by high-speed particles ejected from the Sun,they are most commonly observed during periods of maximum sunspots. From The Beauty of the Heavens by Charles F Blount (London,1845). Coloured lithograph | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / UIG / Universal History Archive |
Bildgröße: | 3264 px × 2683 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |