The predawn hours of Aug. 8 present a perfect opportunity to see Jupiter's four largest moons line up next to the "King of the Planets" as it voyages through the stars of the constellation Gemini.

When we think of moons, we usually think of our Moon. It's bright and familiar, can be seen with the naked eye, and the only one humans have ever set foot on. But in the grand scheme of the solar ...

An eye-catching pattern on the surface of Europa, an ice-covered moon, may have profound implications for our understanding ...

How many moons does Jupiter have? Scientists have discovered dozens of them, but the answer may be more complicated than it seems. When you purchase through links on our site, we may earn an affiliate ...

Turn a telescope to the eastern sky in the hours following midnight on Nov. 5 to see two colossal shadows darken the cloud tops of the gas giant Jupiter as the Galilean moons Io and Europa pass ...

A close conjunction of the waning crescent Moon (approximately 26% illuminated) and Jupiter occurred around 7 A.M. EDT, observable in the eastern sky before sunrise, with the Moon positioned between ...

The moons were discovered by a group of astronomers from Taiwan, Canada, the United States, and France. Between 2019 and 2021, they used the Canada France Hawaii Telescope to repeatedly monitor the ...

It may be cold this month, but now is a great time to get outside and explore Jupiter’s beauty and might. The fifth planet will not only reach opposition on Dec. 7, it will also be at perigee (closest ...

A comet from another star system will swing by Mars on Friday as a fleet of spacecraft trains its sights on the interstellar visitor. We already know a decent amount about how planets form, but moon ...

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 ...

Because it's bigger, Jupiter ought to have larger, more spectacular rings than Saturn has. But new UC Riverside research shows Jupiter's massive moons prevent that vision from lighting up the night ...