On Sept. 21, 2003, NASA's Galileo mission to Jupiter and its moons came to an end. After 14 years of exploration, the Galileo ...

Phases of ice that exist naturally only on frozen moons could be detected using infrared spectroscopy, according to new ...

Io, Europa and Ganymede had already shown their footprints through earlier observations. But Callisto, the farthest Galilean ...

The European Space Agency's (ESA) JUICE spacecraft launched atop an Ariane 5 rocket from French Guiana in April 2023. The ...

JUICE ("Jupiter Icy Moons Explorer"), which is on its way to do just what you might expect after hearing its name. The ...

There are quite a few other places we might find life in the solar system, including dwarf planets like Ceres. Ceres is ...

In the early hours of September 16 skywatchers across North America and parts of Europe will have a rare opportunity to ...

The Solar System is home to a remarkable range of planets, from tiny rocky worlds to massive gas giants. But just how big are these planets really? To put it into perspective, we can run some ...

The autumn night sky in Ireland is an observer's treasure-trove and the first celestial event of the season arrives on September 7 with a lunar eclipse and blood moon ...

The Moon passes 5° north of Jupiter at 7 A.M. EDT. Early risers can enjoy the pairing before sunrise, standing some 50° high in the east an hour before the Sun crests the horizon. Now in its waning ...

There are believed to be over 150 moons in the solar system. Astronomers keep discovering new moons by observation. Jupiter has the most moons—63 have been discovered one by one.