We live in a very exciting time: answers to some of the oldest questions humanity has conceived are within our grasp. One of ...

What was originally thought to be a planet orbiting the Fomalhaut star was probably just the fallout of a wild collision.

Shining in the constellation Gemini near the bright stars Pollux and Castor, Jupiter's opposition is the best time to see the ...

Why Can't We Find Planet 9? Deep in the outer reaches of our solar system, far beyond Neptune and Pluto, something massive is ...

We’ve sent spacecraft to every planet in the solar system, but none of them are truly safe to explore. Each world destroys ...

Which way is ‘down’ has a different answer depending on where you are on Earth, in the solar system, in our galaxy and beyond ...

Saturn reigns supreme when it comes to the number of moons orbiting any solar system planet. Including the 128 ...

At extreme pressures and temperatures, water becomes superionic — a solid that behaves partly like a liquid and conducts ...

Jupiter currently shines as a brilliant silvery "star" in the constellation Gemini the Twins, low in the east-northeast sky ...

Spectacular clouds swirl across the surface of Jupiter. These clouds contain water, just like Earth's, but are much denser on ...

Discover why the solar system's planets are arranged as they are, shaped by formation conditions and planetary migration.

Scientists have discovered more than 6,000 planets beyond our solar system. What if some of them aren't planets at all, but ...