The enormous visitor to our solar system may have been about 8 times the mass of Jupiter, and come nearly as close to the sun ...

Astronomers discovered the exoplanet in 2016, a gas giant that’s slightly larger than Jupiter with a fraction of its mass, ...

In Earth's upper atmosphere, a fast-moving band of air called the jet stream blows with winds of more than 275 miles (442 km) ...

Planet Nine", dubbed, has fascinated scientists for its ability to account for "anomalous" motions of objects located faraway ...

The research, yet to be peer-reviewed, sheds light on what could have changed the orbits of several planets in the solar ...

Planets outside our solar system can be wild, weird places. Astronomers have discovered exoplanets shaped like a rugby ball, or where it rains gems, or which have one hemisphere covered in lava. And ...

Scientists suggest an interstellar visitor may have altered planetary orbits in our Solar System, reshaping trajectories of ...

A new study, currently under review for publication, suggests that an ancient cosmic visitor might have significantly altered the orbits of our solar system's giant planets. Scientists propose that ...

A new study suggests that a planet-sized object may have passed through the solar system billions of years ago.

However, while no such events took place on that date, nor on his revised date of Dec. 25, 1919, the seeds of anxiety and ...

The Ukrainian government in recent months has been aggressively touting fresh developments in its missile-making. President ...

An object eight times the mass of Jupiter may have swooped around the sun, coming superclose to Mars' present-day orbit ...