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

When astronomers found a large world farther out than Pluto, it became one of the final nails in the coffin of our ninth ...

Venus, Mars, Jupiter, Saturn, Uranus, and Neptune will align for our viewing ... nine if you count dwarf power planet Pluto. Because we live on Earth, the max number of planets we can see from ...

Pluto and Charon are in a region of the outer solar system beyond Neptune called the Kuiper belt, which makes them both very rocky and icy. By including these properties in their model ...

What are the weekly horoscopes for your sign? Horoscopes for Aries, Taurus, Cancer, Gemini, Leo, Libra, Scorpio, Sagittarius, ...

Sagittarius, this week is a cosmic adventure! As the Sun and Mercury prepare to meet in Aquarius on February 9, your mind is ...

Because Charon is just over half the size of Pluto, the two bodies then began orbiting each other in a cosmic dance in the Kuiper Belt beyond Neptune’s orbit. However, a recent study in Nature ...

Each planet is imagined as a stand-up comic, bringing its unique traits to the stage. Mercury's quick wit, Venus's charm, ...

Mars retrograde opposite Pluto will likely stir up deep-rooted ... Moreover, with Mercury squaring Neptune that same day, you may also encounter confusion in your professional life or with an ...