Moon phases are caused by the 29.5-day cycle of the moon’s orbit, which changes the angles between the Sun, Moon, and Earth. Moon phases are how the moon looks from Earth as it goes around us.

The moon’s gravitational tug is responsible for tidal changes on Earth, which affect the speed of its spin and the length of its days. JPL/NASA ...

En route to land on the moon, a spacecraft snapped views of Earth eclipsing the sun. The Blue Ghost lunar lander, built by the Texas-based company Firefly Aerospace for NASA, launched to space on ...

As the sun rose in the Northern Hemisphere on Saturday, the moon cut across Earth’s orbit and took a bite out of the sun. The partial solar eclipse, which occurs when the moon moves between the ...