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

Ever since Isaac Newton famously talked about gravity, its dominance as a force in our solar system has been well known. It's ...

Long ago, a planetary object eight times the mass of Jupiter may have once visited the solar system and altered […] The post ...

A new study claims it is possible an "alien visitor" could have warped our solar system during its earliest years.

Scientists now think that a mysterious object massive enough to have gravitational interactions with the Solar System’s disk ...

Beyond Neptune lies the Kuiper Belt, a vast expanse of icy bodies that may hold clues to the solar system’s formation. These ...

Our Solar System is a carefully balanced celestial dance held together by a virtually perfect balance of gravity and inertia.

Astronomers have made a groundbreaking discovery in the WASP-132 system, finding two new planets that defy previous ...

A super-Earth planet that dips in and out of its star's habitable zone has been discovered just 19.7 light-years away.

The exoplanet, which has been named HD 20794 d, orbits in the ‘habitable zone’ of a nearby star similar to our sun.

Planets with suns like Wolf 359 are subject to huge blasts of radiation that raise questions about their long-term ...