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 ...

On the early morning of August 8, Jupiter's four largest moons will align, offering a spectacular view for stargazers in the U.S.

Plus: The August Full Sturgeon Moon shines, the colorful double star Albireo sparkles, and Mercury reappears in the sky this ...

The Moon and Jupiter share the morning sky as they rise together in Gemini the Twins. The pair is about 3° high in the northeast an hour and a half before sunrise, forming an elongated triangle with ...

August brings Saturn and Neptune together, offers two shadow transits of Titan, and sees a conjunction of Venus and Jupiter.

If you're lucky, you'll spot the four Galilean moons: Ganymede, Callisto, Io and Europa. Italian astronomer Galileo Galilei first spotted Jupiter's moons in 1610.

Discovered by Galileo in 1610, Europa is one of the four so-called Galilean moons of Jupiter, along with Ganymede, Io and Callisto. Seeking conditions that support life ...

However, if you're inclined, a telescope will help you see even more details like the Galilean moons and atmospheric belts, according to NASA. Read the original article on Martha Stewart ...

Because Io is so close to its massive host planet, the moon is subjected to a tremendous gravitational pull as it orbits Jupiter once about every 42 hours, according to the Planetary Society.

It's also the only one of Jupiter's four large Galilean moons (the others being Europa, Callisto and Io) whose surface is dominated by furrows that form concentric circles around one specific spot.

Close-up of the craters and furrows on Ganymede's surface. Credit: NASA/JPL-Caltech/SwRI Aside from being the biggest of Jupiter's 95 moons, Ganymede is best known for its axial tilt and deep ...