January's sky brings a planet parade, Mars opposition, and the Quadrantid meteor shower. Enjoy Venus and Saturn's close ...

Mars has two moons, Phobos and Deimos. Scientists still debate whether these came from asteroids that passed close into Mars' ...

Now, a new yet-to-be-peer-reviewed study suggests that an enormous interstellar object up to fifty times the mass of Jupiter may have been responsible for stirring the planets out of their ...

Happy New Year and happy perihelion day! Earth is closest to the sun today at just 91,406,000 miles (1.55 million miles ...

The researchers developed a capture cross-section for the solar system's phase space then calculated how many rogue planets are ... this population of objects. It may even show how they cluster ...

New radio astronomy observations of a planetary system in the process of forming show ... multi-planet systems, like our own Solar System, is still poorly understood. The best example object ...

A large metallic ring from space crash-landed in Kenya on New Year's Day. Officials want to determine its origins and hold ...

It was also common at this time for the planets to be visited by celestial objects from outside the system, not unlike the big space rock Oumuamua ... simulations to show that this scenario ...

The object hosts two known planets, and the new ALMA observations revealed a localized accumulation of dust grains outside the planetary orbits. This finding suggests that already-formed planets ...

Now a new theory suggests a two- to 50-Jupiter-mass object passing through the solar system could be the cause. The evolution of the orbits of the planets is a complex process. Initially ...

A Neptune-sized planet closely orbiting its host star has just been discovered, making it only the fourth object of its kind ... Breaking space news, the latest updates on rocket launches ...