A very rare treat is about to grace Earth's night skies.

There are eight official planets (sorry, Pluto) in our solar system: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus and ...

For most of January, four of the eight planets in our solar system (sorry, Pluto) will be visible if the sky is clear enough ...

The newcomer replacing Pluto presently goes by “Planet Nine.” If and when it finally shows up, it will get the honor of a ...

A few decades ago, the Solar System had nine planets, but in 2006 the International Astronomical Union reclassified Pluto as ...

Accessible to anyone the world over, witnessing the majesty of the solar system, including the Milky Way, and its billions of ...

Imagine setting off on a road trip that doesn’t just take you through charming towns, but through an entire solar system – ...

In our solar system, Earth is one of only three worlds that sees temperatures above 32 degrees Fahrenheit, while other ...

The Sun, the planets, and all else that constitutes the solar system are hurtling toward the star Lambda Herculis, some 370 ...

January's sky brings a planet parade, Mars opposition, and the Quadrantid meteor shower. Enjoy Venus and Saturn's close ...

Some stargazers are calling it a planetary parade: Every other planet in our solar system can be seen in the sky tonight.

The presence of a North Pole star is a coincidence that has saved lives and perhaps changed history, but is it shared across ...