Could the icy moons of our solar system hold life beyond our planet? Keith Cooper looks at how planetary scientists plan to find out ...

Jupiter reaches opposition, making it brighter and larger than at any other time this year. A rare transit of its moon ...

On January 7, 1610, the Italian astronomer Galileo discovered three of Jupiter's moons: Callisto, Europa and Io. When he ...

On Dec. 28, 2000, NASA’s Galileo spacecraft discovered auroras on Ganymede, Jupiter’s largest moon. Galileo launched in 1989 on a mission to study Jupiter and its moons. It also flew by Venus and ...

The moon sets behind Monte Prena in Gran Sasso d'Italia National Park in January 2022. The stargazing calendar for 2026 gets off to a bit of a contrary start. January is all about opposition, which is ...

Breakthroughs, discoveries, and DIY tips sent every weekday. Terms of Service and Privacy Policy. The stargazing calendar for 2026 gets off to a bit of a contrary ...

KENNEDY SPACE CENTER — NASA's Europa Clipper mission on Monday launched a satellite to investigate Europa, Jupiter’s “mysterious moon” — a world covered in ice that scientists say could have an ocean ...

From a crescent moon and a 'Christmas Star' to deep sky delights, the wonders of the holiday night sky are yours to explore with a telescope, binoculars or the naked eye. When you purchase through ...

Jupiter achieves opposition on January 10, providing optimal viewing of its extensive atmospheric details and dynamic Galilean moon transits, including a rare overlapping shadow transit of Callisto.

On December 19, an observable event featuring Jupiter’s innermost Galilean moon, Io, and its shadow transiting the gas giant will be visible across the United States. Jupiter, approaching opposition ...