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

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

When you first learned about the Solar System, you probably saw diagrams that made it look orderly, with planets arranged in circular orbits around the Sun on a flat disk. But in reality, our Solar ...

"What If is an epic exploration of possibilities. What If is a Webby Award-winning science web series that takes you on a ...

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

If you were to perfectly follow the steps in An Idiot's Guide to Making a Solar System, you should eventually find yourself ...

The seven planets will not be perfectly aligned, but will appear in an arc across the sky due to their orbital plane in the ...

For much of January and February, you have the chance to see six planets in our solar system after dark, although two — Uranus and Neptune — will be hard to see without a telescope or high-powered ...

Six of our cosmic neighbors are expected to line up across the night sky tonight, in what has been dubbed a "planetary parade ...

The cosmos, full of endless wonders and mysteries, keeps throwing us celestial curveballs. In a revelation that could reshape ...

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