The candidate for Planet Nine displayed a tiny amount of movement, which could mean it advanced further in its orbit around ...

WD 1856+534b—a freezing world with a surface temperature of -125 degrees Fahrenheit—exists where planets are normally scoured ...

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

This is probably the most convincing evidence for Planet Nine so far. It is believed that this planet is five to ten times ...

So which planets in our solar system have rings? All four giant planets — Jupiter, Saturn, Uranus and Neptune — sport these ...

A planet circling at a sharp 90-degree angle to the orbits of its two host stars has now been confirmed. This discovery ...

Super-Earths might be far more common in the Universe than previously thought. A recent study using the KMTNet telescope ...

we know a lot about what a planet in its suspected area could be like. The team used qualities like this—such as a very long ...

Discover the order of planets ... rotating cloud of gas and dust known as the solar nebula. Gravity caused the nebula to collapse in on itself, forming a dense, hot core that ignited to become the ...