In January 1610, Galileo Galilei, using a newly improved telescope with 20x magnification, observed four celestial bodies orbiting Jupiter, initially appearing as stars. These bodies, later named Io, ...

Looking for a sky event this week? Check out our full Sky This Week column. November 30: Watch Titan reappear Jupiter is the object you'll want to be watching this evening, as Ganymede prepares to ...

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 ...

It's a world home to gigantic storms bigger than Australia, 100-mph winds pummeling its northern reaches and a rocky moon riddled with lava-spewing volcanoes. Welcome to Jupiter. NASA scientists have ...

Eight distant worlds hold secrets that still puzzle scientists and spark endless curiosity. Each moon offers a strange allure ...

When you buy through links on our articles, Future and its syndication partners may earn a commission. Credit: MARK GARLICK/SCIENCE PHOTO LIBRARY/Getty Images The first ever 3D radiation map of ...

NASA’s Juno spacecraft captured a rare dark-rayed crater on Ganymede, offering fresh clues about the moon’s icy surface, ...

NASA's Europa Clipper probe will study Jupiter's moon Europa, which is thought to have an underground ocean and a potentially habitable environment NBC Universal, Inc. For decades, an icy moon of ...

NASA's Europa Clipper spacecraft is set to explore Jupiter's moon Europa, one of the prime candidates for finding life beyond Earth. Europa Clipper will assess whether Europa's conditions, such as its ...

A spacecraft that will study one of Jupiter’s moons is set to launch Monday on a journey of more than six years to discover if the moon has the ability to support life. The solar-powered spacecraft ...

Skywatchers on Thursday evening, Feb. 6, will notice an eye-catching pairing-off between two of the brightest objects in the nighttime sky. The moon, nearly two nights past first quarter and appearing ...

ESA’s Jupiter Icy Moons Explorer (JUICE) that was launched in 2023 will take about 8 years to arrive at the jovian system ...