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

On Earth, deep-sea vents may have given rise to the planet’s first life. But nothing of the sort seems to be happening at the ...

That would make it thousands of times more massive than any moon orbiting a solar system plane  — so massive it could make ...

NASA launched the Europa Clipper spacecraft in 2024 with the goal of investigating whether conditions favorable for life exist on Europa.

After full moon, the terminator returns, but this time on the moon's opposite side, where it marks the line of advancing ...

Jupiter reaches opposition overnight on Jan. 10, when it appears its brightest in 2026 opposite the sun in Earth's sky.

The wolf moon is spectacular enough, but look east and you’ll see a celestial titan the size of a pinprick ...

Saturn reigns supreme when it comes to the number of moons orbiting any solar system planet. Including the 128 ...

The two largest planets in the Solar System – Jupiter and Saturn – have a lot in common. They're made of very similar stuff, ...

The giant planet Jupiter has nearly 100 known moons, yet none have captured the interest and imagination of astronomers and space scientists quite like Europa, an ice-shrouded world that is thought to ...

Sky This Week is brought to you in part by Celestron. Friday, January 23Pluto reaches conjunction with the Sun at 5 A.M. EST.

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 ...