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

The number of planets that orbit the sun depends on what you mean by “planet,” and that’s not so easy to define ...

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

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

More than a decade of data about the particles zipping around our sun can solve mysteries from the behaviour of individual ...

Starting up again Saturday, a sweeping view of our solar system will glow in the night sky. The planetary alignment, or a ...

Though the planets are always “aligned,” seeing more than four in the sky is more uncommon. February’s lineup is a chance to ...

Stargazers can witness a rare 'planet parade' in January and February 2024, where six planets align prominently in the night ...

The aurora borealis is back and is expected to be visible in more than 10 states. See which states will have the best views.

Jan. 15, 2025 — New observational data and simulation models have confirmed a new type of planet unlike anything found in the Solar System. This provides another piece of the puzzle to ...