The Moon appears unchanging in the night sky, but its movement hides a slow transformation. For decades, scientists have observed that our satellite is gradually moving away from Earth, year after ...

When we look at the night sky, the Moon appears to be hanging there motionless. Yet, it is constantly pulled toward Earth by gravity. So why doesn't it eventually fall onto us? The answer lies in a ...

The Moon is getting 1½ inches (3.8 centimeters) farther away from the Earth every year. Scientists measure the distance to the Moon by bouncing lasers off mirrors placed there by space probes and ...