Mars is known for its barren desert landscape and dry climate. But two recent studies in the journals Nature and Science go ...

An astronomer at the University of Arizona is excited about the potential for life on a possible planet in the nearest solar ...

Uranus keywords: breakthroughs, disruption, evolution, technological, innovation, rebellion, awakening, freedom, ...

Using data from NASA’s retired InSight lander, two separate teams of researchers found evidence of a sluggish Martian mantle ...

The planets, sun and moon have significant meaning in astrology. Here's everything to know, including how they affect your daily life.

Since the first discovery of planets beyond the solar system in 1995, more than 6,000 exoplanets have been identified. Many ...

Given just how big space is, the solar system seems like it shouldn't be too mysterious. But there are actually plenty of questions that took years to solve.

Test your knowledge with this short quiz about the cosmos, from planets to stars and beyond.

Last week, astronomers said they discovered evidence of a ninth planet in our solar system. It may be a super-Earth, something scientists didn't think we had here, says astrophysicist Adam Frank.

Here's how the planets and dwarf planets got their names — and how to find them using mobile apps.

A full moon is slated for Sept. 7, but there are other celestial events occurring this month. More on viewing Saturn at its ...