Study reveals an interstellar object's impact on planetary orbits, reshaping solar system dynamics. Discover how simulations ...

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

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 ...

When you first learned about the Solar System, you probably saw diagrams that made it look orderly, with planets arranged in ...

All seven of the other planets in our solar system are about to become visible at once in a great planetary alignment – ...

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

Stargazers will be treated to a rare seven-planet alignment in February. This is what scientists hope to learn.

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

Further simulations on flybys into the inner Solar System revealed one of our own planets might be flung out of the ballpark ...

New research suggests that a massive, unidentified object might have passed through our Solar System billions of years ago, ...

A powerful new tool comes online this year that could help astronomers locate the mysterious planet hiding somewhere beyond ...

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