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

The formation of our solar system from a singular nebula raises an intriguing question: why did each planet develop with a ...

A planetary alignment, or a "planet parade" according to the internet, will grace our night sky just after dusk, according to ...

Don't put your binoculars away just yet, the planet parade continues through February. Here's which planets will be visible this month.

The current exoplanet census contains 5,832 confirmed candidates, with more than 7,500 still awaiting confirmation. Of those that have been confirmed, most have been gas giants ranging from ...

While the composition of gas and dust in a molecular cloud is fairly uniform, everything changes once a star begins to form.