Solar eclipse geometry,artwork. Solar eclipses occur when the Moon passes across the Sun as seen from the Earth. The Moon's shadow consists of a dark central umbra surrounded by the lighter penumbra. A total eclipse is seen from within the umbra,around a hundred kilometres across,and can last for several minutes. From the area covered by the penumbra,a few thousand kilometres across,a partial eclipse is visible. A solar eclipse occurs only at New Moon,and even then only if the Earth- Moon alignment is correct,usually less than once a year. Totality is rare at any one location. It last occurred at this point in Morocco in 1778 | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Van Ravenswaay, Detlev |
Bildgröße: | 4989 px × 3430 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |