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

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

While planets circle the sun in what's called and heliocentric orbit, they rarely fall together in what appears to the human ...

creating an uncommon seven-planet alignment, which will not be seen again until 2040. The eight major planets in our Solar System orbit the sun on the same flat plane but at vastly different speeds.

Whether you’re single or happily partnered up, make plans now for these comedy nights, craft sessions or Galentine’s Day ...

Known as the "Parade of Planets," the celestial event will feature appearances from Mars, Jupiter, Uranus, Venus, Neptune and ...

As we discussed last month, late January and early February will provide a stage for a Planet Parade, with six planets lining up in the night sky. On February 1, we should see the crescent moon in ...

And being so close to the sun, it will be difficult to see. With eight planets in our solar system, they all have some very interesting traits. Here's a quick look at the planets aligning on this ...

The world's space agencies are keeping close watch on an asteroid heading our way, because there's currently a 1 in 83 chance ...

Heads up! Four planets are visible in the evening sky this month, and another two planets can be found with a little help.