Orbital phases demonstration. Polystyrene ball resting on circular foam board and circling an electric light to demonstrate the orbital phases of planets. | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / DK IMAGES |
Bildgröße: | 3480 px × 2813 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |