Non-mixing layers of water and hydrocarbons thousands of miles deep could explain the icy planets’ strange magnetic fields.

This is the last time the seven planets will appear together in the night sky until 2040. Here's when it's happening – and ...

Stargazers will be treated to a rare seven-planet alignment in February. This is what scientists hope to learn.

Known as the "Parade of Planets," the celestial event will feature appearances from Mars, Jupiter, Uranus, Venus, Neptune and Saturn through the end of January, according to Farmer's Almanac. Mercury ...