Illustration of Mars over four rotations of the planet. South is at top. These observation were taken in April 1920, when Mars was at its closest for that year at a distance of 88.5 million kilometres from Earth. | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Van Ravenswaay, Detlev |
Bildgröße: | 3543 px × 3445 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |