10 Questions The Moon: Phases of Discovery Test your knowledge about the Moon, a quiz aligned with the "Kingdom in Peril" learning experience on Infiniscope, a Science Mission Directorate project powered by NASA. True or False: We always see the same side of the Moon. True False Approximately how long does it take for the Moon to orbit Earth? 24 hours 7 days 28 days 365 days What causes the phases of the Moon? Shadows from other objects in the solar system The Moon's position relative to Earth & The Sun The shadow of Earth The rotation of the Moon … and 7 more awesome questions! Check them out by clicking “Play”.