Learn how the Moon’s phases form, why it changes shape in the sky each night, and what each stage — from new moon to full moon — actually means.

This week in Skywatch, I want to go back to basics when it comes to the moon. So why does the moon change shape? Why is it a crescent on one night, a half-moon another night, and a full moon on yet ...

The answer here is patience. Within a few days, the moon slips further along its orbit, and a tiny sliver of light appears. Knowing the cycle starts at “invisible” helps you track the rest more easily ...

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 ...

The celestial event is visible across many countries in the Northern Hemisphere, including Europe, North America, the United ...

The impact that carved out the South Pole-Aitken basin on the moon appears to have come from the north, not the south as ...

A total lunar eclipse, also known as a blood moon, will occur Sept. 7-8. The September lunar eclipse will be the last of the year. The next lunar eclipse visible from North America will not be until ...

The impact carved deep into the Moon’s crust, exposing radioactive-rich materials known as KREEP — short for potassium, rare ...

Scientists measure the distance to the Moon by bouncing lasers off mirrors placed there by space probes and astronauts.