If you didn't catch the " blood moon " Sept. 7-8 from your backyard in the United States, there's a perfectly good ...

Earth ’s moon phases cycle from month to month, waning and waxing in its constant transformation from new moon to full moon and back again. This lunar cycle happens in part because the moon does not ...

Watch the moon phases and libration for 2024, as seen from Earth's Southern Hemisphere, in this time-lapsed animation that is set at hourly intervals. Video credit: NASA's Scientific Visualization Stu ...