Ganymede is not only Jupiter's largest moon, but also the largest in our solar system and one of the few that hosts a massive ...

Looking for a sky event this week? Check out our full Sky This Week column. May 21: Check in on Saturn and Mars Tonight we're ...

The team still can't confidently rule out the existence of Europa's water vapor, especially as similar plumes have been more ...

Using nearly a decade of satellite observations, NASA's Black Marble project reveals a constantly shifting portrait of human ...

The two planets, being the two brightest planets in view from Earth, will also be joined by Mercury.

Jupiter’s large moon Ganymede begins passing behind the planet in an occultation late on the 27th. It then travels through the gas giant’s long, dark shadow to finally pop back into view early on ...

Sky This Week is brought to you in part by Celestron. Friday, May 15Are you familiar with the constellation Crater the Cup?

On May 20, witness the waxing crescent moon align with bright Jupiter after sunset, creating a stunning celestial display ...

On Wednesday, May 20, skywatchers looking west after dusk will be able to spot the crescent Moon glowing beside Jupiter for ...