The distance between Earth and the Moon
The Moon’s orbit is an ellipse, so the distance changes throughout the month. At its closest point, perigee, it comes to about 356,000 kilometers; at its farthest, apogee, it’s about 406,000 kilometers. The average is 384,400 kilometers.
When a full Moon coincides with perigee, it can appear up to 14% larger and 30% brighter than at apogee: this is called a supermoon.
Light takes just over 1 second to travel from there to here. A plane flying at 900 km/h would take about 18 days, and Apollo 11 took about 3 days. The Moon is also receding from Earth by about 3.8 centimeters per year.













