Here's when to see a pair of massive letters shining on the lunar surface around May's first quarter moon phase.

Tonight marks the First Quarter Moon, when roughly half of the Moon’s visible face is illuminated. As of Saturday, May 23, ...

Long before the full moon rises, shifting sunlight transforms the lunar surface into one of the sky's best telescope targets.

Watch the moon phases and libration for 2024, as seen from Earth's Northern Hemisphere, in this time-lapsed animation that is ...

NASA’s Psyche spacecraft is using a daring close flyby of Mars to slingshot toward one of the solar system’s strangest ...

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 ...

San Francisco night owls got a special treat on Tuesday as the fog and cloud cover cleared out just enough that a rare “blood moon” was visible in parts of the city. Photos from across the city show ...