When most people think of our Solar System, they think of the 8 planets officially recognized by the International Astronomical Union (IAU). But what if I told you there are at least 40 planets, and ...

How many dwarf planets are there in our solar system? The recent discovery of 2017 OF201 makes the tally anywhere between ...

The planets in order from the Sun are Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune. If you include the ...

Sedna will reach its closest approach to the Sun in 2076, providing a remarkable space-faring opportunity that won’t come again for another 11,400 years.

Studies of 15 M-type stars have revealed new insights into the potential presence of exoplanets. A new study led by ...

Computer simulations show that planets could be flung out of the inner solar system, supporting the possible existence of a ...

WASHINGTON (Reuters) -Scientists have identified an object about 435 miles (700 km) wide inhabiting the frigid outer reaches of our solar system that might qualify as a dwarf planet, spotting it ...

They eventually settled on the dwarf-planet designation for Pluto and Eris -- which meant Ceres had to be thrown in too.

In fact, icy moons and dwarf planets in the outer Solar System appear to have liquid oceans below layers of thick ice. Recent research suggests there could even be oceans inside bodies beyond Pluto.

Dwarf planets Eris and Makemake (out by Pluto) have surfaces bearing methane ice of unknown origin. This ice can provide important insights into the origin and evolution of volatiles in the outer ...

A team found evidence for hydrothermal or metamorphic activity within the icy dwarf planets Eris and Makemake, located in the Kuiper Belt. Methane detected on their surfaces has the tell-tale ...