Artemis II crew see first glimpse of far side of Moon [video]
Artemis II crew see first glimpse of far side of Moon [video]
The moon is tidally locked with the Earth, which means the same side always faces the Earth. So, for example, when the moon is between the Earth and the sun, the far side (from the perspective of Earth) would be fully illuminated by the sun.
The “far side” of the moon refers to the hemisphere that can’t be seen from Earth.