Answer:
The distance between the Earth and the Moon varies over the course of the Moon's orbit, ranging from a minimum of approximately 363,104 kilometers (225,622 miles) at the perigee to a maximum of approximately 405,696 kilometers (252,088 miles) at the apogee. The average distance between the Earth and the Moon is about 384,400 kilometers (238,855 miles), which is equivalent to approximately 1.28 light seconds. This average distance is subject to variation due to the Moon's elliptical orbit around the Earth. To measure the precise distance, laser ranging technology is used to measure the time it takes for laser beams to travel from the Earth to retroreflectors placed on the Moon's surface and back to the Earth.