Solar System

The sun may have swirling polar vortices similar to those on Earth, but powered by a very different source, according to a new study.

A student-led project comparing satellite images of the Arctic has discovered that a small Russian island has recently vanished after "completely melting" away.

New evidence found in the Rocky Mountains of Colorado supports the notion that Snowball Earth was indeed a global phenomenon.

Data from China's Zhurong rover has revealed what appears to be an ancient shoreline streaking through Mars' northern hemisphere.

A new analysis of Voyager 2 data reveals a fresh theory about Uranus's unique magnetosphere.

Potentially dangerous comets could be spotted many years in advance by following the meteoroid trails they leave near Earth, new research shows.

The cryovolcanic "centaur" comet 29P/Schwassmann-Wachmann has erupted four times in less than 48 hours, becoming unusually bright in the process. It is the most powerful outburst from the city-size oddball in more than three years.

NASA's Juno spacecraft has sent back stunning photos of Jupiter, including colorful, chaotic storms swirling through the planet’s atmosphere.

Jupiter has no solid ground, like the grass or dirt you tread here on Earth. But how can that be? If Jupiter doesn’t have a surface, what does it have?