Scientists have discovered a rare six-planet system where all planets orbit their star in perfect mathematical harmony.

Sky gazers will get a peek at what has been called a "parade of planets," where this time around, up to seven planets may ...

A planet parade like the one beginning tonight is quite uncommon, occurring once every 10-20 years. Here are the planets you ...

Worlds will align for a "planetary parade" in January, with four bright and easily visible to the naked eye. But an even ...

Smaller gas giants are less likely to survive in such systems, surrounded by clashing planetary titans. With their lower ...

Astronomers are searching for a potential ninth planet, known as Planet Nine, which could reshape our understanding of ...

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

NASA's Director of Planetary Science, Jim Green, discusses the Jan. 20 2016 Astronomical Journal science paper that points to ...

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

Hong Kong residents will have the rare opportunity to observe four of the brightest planets in the solar system with the ...

The innermost Earth-like planet in the famous TRAPPIST-1 system might be capable of supporting a thick atmosphere after all, ...

Mars’ strangely small mass still puzzles planetary scientists. Definitive answers as to why are still hard to come by.