We used to think moons were the boring sidekicks of the solar system. For decades, we treated them like cosmic leftovers — ...

Mars is the fourth planet from the sun and has a distinct rusty red appearance and two unusual moons. The Red Planet is a cold, desert world within our solar system. It has a very thin atmosphere, but ...

Mars is spinning slightly faster each year, and scientists believe solar system's largest vocano Olympus Mons is speeding it ...

The workings of our solar system are roughly the same now as they have been for millions of years. Moons circle their planets, the planets circle the sun, the sun’s magnetic fields and sunspots wax ...

Our solar system is way more bizarre and dynamic than what our school textbooks taught us. From Venus being super hot to ...

There’s a giant ball of ice barreling through the solar system right now, and it’s bigger than any we’ve seen before. It poses no threat to Earth, but this comet, called C/2014 UN271 ...