There’s no mistaking Jupiter in the sky these Pottsville winter evenings, rising in the southeast as evening twilight ends.

While Io, the most volcanically active moon in the solar system, appears completely dry and devoid of water ice, its neighbor ...

Jupiter's moon count reaches 95+ official satellites. Explore the history of the Jovian system, from Galileo to the latest NASA discoveries.

"Most excitingly, this new idea addresses one of the longstanding habitability problems on Europa and is a good sign for the ...

How nutrients from Europa's icy shell reach its ocean has been unclear despite several theories.

Jupiter steals the spotlight in January as it reaches its brightest and biggest appearance of the year. The month also features a Moon–Saturn meetup and the steady glow of the Beehive Cluster for ...

Jupiter reaches opposition, making it brighter and larger than at any other time this year. A rare transit of its moon Callisto adds to the event, visible with binoculars or a small telescope.

Each Monday, I pick out North America’s celestial highlights for the week ahead (which also apply to mid-northern latitudes ...

Sky This Week is brought to you in part by Celestron. Friday, January 9Mars is in conjunction with the Sun at 7 A.M. EST, invisible in our sky until mid-March. The bright moon Titan lies near its ...

Kick off 2026 with stunning celestial events! Witness Jupiter shining brighter than ever, Saturn’s close encounter with the moon, and the beautiful Beehive Cluster lighting up the night sky. Get all ...

While Io, the most volcanically active moon in the solar system, appears completely dry and devoid of water ice, its neighbor ...