If there was a contest for the most interesting moon in our solar system, Callisto would be a contender. Jupiter's ...

Astronomers have uncovered new evidence that Jupiter’s moon Callisto likely harbors a massive underground ocean, potentially ...

"It's like a game of billiards around the solar system, flying by a couple of planets at just the right angle and timing to ...

Tonight kicks off great week of star gazing in Pennsylvania, with the full moon rising next to Venus and a rare planetary ...

While Mercury will be visible throughout early March, there will be two nights that provide especially good opportunities to ...

Luna skims by Mercury, Venus, Uranus, Neptune, and Jupiter as it grows from a thin crescent to just past First Quarter in the ...

While much of what you've been hearing about a "Planetary Parade," is pure hype, you still do have reason to look into the ...

Seven planets are on display in the night sky at the end of February, but some will be harder to spot than others. Here’s ...

If last year whet your eclipse appetite, get excited for the night skies this month. Mid-March will bring a total lunar ...

March’s night sky brings a total lunar eclipse, a rare chance to see Mercury, and shifting planets. Don’t miss these ...

If you’re feeling like the tone of the moment is particularly frenetic or heightened emotionally, you’re far from alone, and ...

Friday's crescent moon brings the first night of Ramadan. But guess what? There will be a planetary alignment in the sky, too ...