Jupiter's four Galilean moons will line up in front of Jupiter in the early morning sky on Aug. 8. The predawn hours of Aug. 8 present a perfect opportunity to see Jupiter's four largest moons line up ...

ESA's Mars Express orbiter captured footage of the Mars' moon Deimos pass in front of Ganymede, Europa, Jupiter, Io and ...

Venus and Jupiter will meet in a conjunction in the early morning hours of Aug. 12. Here's everything you need to know to ...

The test validated JUICE's RIME radar, which will explore Europa, Ganymede, and Callisto for signs of life under their frozen ...

While Jupiter itself may seem like an inhospitable gas giant, its numerous moons offer some of the most promising,and ...

Look east around 4 a.m. local time, just before dawn, to see the slender form of the crescent moon climb above the horizon.

From a half-million miles away, NASA's Europa Clipper spacecraft captured Mars with its two moons, Phobos and Deimos, in space. To see a labeled view, swipe the slider above to the left.

The full moon takes place a mere three days before the Perseids meteor shower peaks, and 11 days before the next planet ...

Along with being the last full moon of summer, August's sturgeon moon will take place within a few days of other celestial ...

The full moon allows us to shine a light on ourselves and our subconscious to reveal something hidden inside. But this moon is "extra special." ...

NASA’s Europa Clipper spacecraft just aced a key radar test while flying past Mars, proving its ability to detect structures ...

August’s full sturgeon moon is peaking this weekend, accompanied by meteor showers and shining planets. Here’s how to see the ...