So which planets in our solar system have rings?All four giant planets — Jupiter, Saturn, Uranus and Neptune — sport these spectacular structures. Plus, many other objects in the solar system, ...

So which planets in our solar system have rings? Planetary rings might look sturdy and solid from afar, but they're made of tiny bits of ice and rock orbiting the planet. "Rings are mostly made of ...

Scientists' hunt for a mysterious planet at the edge of our solar system might have turned up results. A US-trio appears to ...

Earth has four seasons, but do other planets in our solar system also have hot summer days and cold winter nights?

It's an evocative idea that has long bedeviled scientists: a huge and mysterious planet is lurking in the darkness at the ...

U.S. astronomers hunting for "Planet Nine" have instead stumbled on what appears to be a new dwarf planet in the solar system's outer reaches.

Mars, engaged in a cosmic tug-of-war with its moon, is predicted to form rings again in the next 50 to 70 million years.

Based on 20 years of observations by NASA’s Hubble Space Telescope, new research sheds light on one of the solar system’s ...

The small world was found during a search for the hypothetical Planet Nine, and astronomers say the next time it will reach ...