Step outside just after sunset and you may catch an unusual sight: six planets strung across the sky in a gentle arc. The ...

Nearly all of the solar system’s planets are about to file across the night sky in a planetary alignment, and it will be ...

Add Yahoo as a preferred source to see more of our stories on Google. Jupiter is already the biggest planet by far in our solar system, but new research suggests it was somehow once even larger than ...

Venus and Saturn are due up for a visually striking event known as a planetary conjunction. Here's everything to know about ...

Illustration comparing the planets of the Solar System and the Sun on the same scale. The planets are shown to scale relative to each other but their distances are not. From left to right the bodies ...

Six planets are set to align on Saturday, creating a planetary parade that will be visible to sky-gazers across the globe.

The Sun is an incandescent but benevolent dictator. For billions of years, it’s kept our star system well organized through the influence of its powerful gravity. All the planets revolve around it on ...

A group of astronomers has found a solar system 116 light-years from Earth that seems to challenge current theories about how ...

This article was originally featured on The Conversation. Are planets in the solar system that are closer to the Sun older than the ones further away? – Gavriel, age 10, Paducah, Kentucky A cloud of ...

Astronomers have confirmed the existence of a potentially habitable exoplanet GJ 887 d near one of the stars closest to the ...