Far from the warmth of the Sun, some of the coldest-looking worlds in the solar system may be hiding the hottest surprises.

Scientists believe it's unlikely the first person to plant a flag on the red planet would be stuck by lightning.

Saturn’s rings are not the permanent fixture they appear to be through a backyard telescope. Planetary scientists now agree ...

The Geminids are expected to run from Dec. 7-17, with a peak on the nights of Dec. 13 and 14 when 120 to 150 shooting stars ...

On Nov. 2, 2000, the crew of NASA’s Expedition 1 opened the hatch to the International Space Station, which was the beginning ...

There’s magic in the air this holiday season and there’s also magic in the December night skies. These long nights are ...

Despite their liquid water and potential for habitability, these moons are very different environments from Earth. On Earth, ...

Look to the southeastern horizon in the hours following sunset on Nov. 29 — you'll be able to see the moon shine close to the ...

Small icy moons may have hidden oceans that briefly boil under thick ice. Changing pressure inside these moons shapes their ...

A University of Southampton study has revealed an intriguing new clue in the mystery of what triggers periods of very intense ...

Scientists have detected what they believe to be lightning on Mars by eavesdropping on the whirling wind recorded by NASA's ...

Researchers have documented 55 instances of "mini lightning" over two Martian years by eavesdropping on the whirling wind ...