Pluto sits far out in the Solar System, small and dim, moving at a pace that barely fits human timelines. It was found in ...

Why don't planets fall into the stars they orbit if they're constantly being pulled by gravity?Lindsey CoughterRocky Mount, ...

In a blow to anyone dreaming that complex life may exist elsewhere in the universe, a new study suggests we're unlikely to ...

We live in a very exciting time: answers to some of the oldest questions humanity has conceived are within our grasp. One of ...

Here's how the astronomical phenomenon influences our planet—from the length of our seasons to the way Earth moves through ...

The Earth’s orbit around the Sun is slightly elliptical, causing our planet’s distance from the Sun to change throughout the ...

At half the size of Earth and one-tenth its mass, Mars is a featherweight as far as planets go. Yet new research reveals the ...

On Saturday (Jan. 10), for example, we will see three satellites on one side of Jupiter (going outward from the planet: Ganymede, Io and Europa ), while the fourth ( Callisto) remains all by itself on ...

It's estimated there may be trillions of rogue planets wandering through the Milky Way, unbound to any star. Since detecting our first ones, we have been presented with an odd mystery.

Here's how the astronomical phenomenon influences our planet—from the length of our seasons to the way Earth moves through ...

A new survey maps nearby K-type stars and shows why these long-lived, stable stars are important targets in the search for ...

A new astronomical survey has brought scientists closer to identifying nearby stars that could host Earth-like planets ...