October's longer nights bring two transits of Titan across Saturn, while Io and Europa tango together across Jupiter three times. Mercury and Mars make a brief evening appearance, and Venus dominates ...

October 2025 promises an exciting month for skywatchers as multiple celestial events unfold across the globe. From bright moons to meteor showers and distant galaxies, the night sky offers a ...

The Habitable Worlds Observatory is poised to tell us whether Earthlike planets are common—if it can get off the ground ...

NASA's GRACE satellite detected a large gravity anomaly over the Atlantic Ocean. Meanwhile, Earth-based observatories saw a rapid shift in the planet's geomagnetic field.

October opens with Saturn, just about a week past opposition, high up in the eastern sky after dark and visible all night. Look for it just below the nearly Full Moon on October 5th. Full Moon is one ...

A 2017 satellite photo shows the stark contrast along the boundary between a giant field of golden "star dunes" and a barren rocky wilderness in the Sahara, which overlaps with an international border ...