The moon is tidally locked with Earth. That means that the same side of the moon is always facing us. However, over the course of its month-long cycle around the earth, the light from the sun illuminates different parts of the Moon, which is why only half of the Moon is visible right now. A full moon is when the entire visible face is illuminated by sunlight, and a new moon is when all of the sunlight is hitting the side that we can't see.
The moon is tidally locked with Earth. That means that the same side of the moon is always facing us. However, over the course of its month-long cycle around the earth, the light from the sun illuminates different parts of the Moon, which is why only half of the Moon is visible right now. A full moon is when the entire visible face is illuminated by sunlight, and a new moon is when all of the sunlight is hitting the side that we can't see.