Two photographs of the Moon 24 hours apart. One day later (left) the terminator has moved 13 degrees to the western limb. The Moon is Earth's only permanent natural satellite. It is the largest among the planetary satellites relative to the size of the planet that it orbits. The Moon is thought to have formed 4.51 billion years ago. The Moon's average orbital distance is 384, 402 km. | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Van Ravenswaay, Detlev |
Taille de l’image : | 5129 px × 3407 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |