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.

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

The observatory, located away from city lights and above the fog line, offered a prime location to attempt to view the ...

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

In astronomy, an occultation is when a celestial body or object — like the moon or a planet — passes in front of a distant celestial body or object — such as a star or other solar system body — and ...

The object dubbed Earth's "second moon" is actually a quasi-satellite that's accompanied the planet since 1957 — not a true ...

The satellites in Amazon's new internet-beaming megaconstellation in low Earth orbit are bright enough to disrupt ...

The craters bear the names of astronomers who revolutionized our understanding of the night sky.

In 1971, during the Apollo 15 mission, NASA astronaut David Scott carried out one of the most elegant scientific ...

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