After two decades of debate, research confirms that an odd binary star system has an equally odd planetary companion ...

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

Our solar system may have a ninth planet after all, following the declassification of Pluto nearly two decades ago, ...

The lone planet confirmed to be in the system is squeezed in between the two, orbiting at a distance similar to Earth's distance from the Sun. And, as an added bonus, the planet is orbiting backward ...

A planet circling at a sharp 90-degree angle to the orbits of its two host stars has now been confirmed. This discovery challenges long-standing ideas about how planets form and orbit in the cosmos.

Until not many years ago, scientists didn’t think planets could exist around a pair of stars. The complications from the ...

Structures known as "zippers" and "twisters" in the early universe may explain why dwarf galaxies tend to line up with each ...

A seven-planet system some 40 light-years from Earth could be swimming in water, new research shows. In February 2017 ...