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 ...

In an exciting breakthrough in planetary science, a recent study has increased the likelihood of Planet Nine’s existence by up to 40%. This planet, also referred to as Planet X, has remained an ...

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

On Jan. 5, 2005, Eris was discovered. It was considered the largest known dwarf planet in the solar system until a year later when Pluto was downgraded from being a planet.

And then there is Haumea, with two moons and a mass about one-third of Pluto's. But the object that caused the need for a new planet definition and a good 18 years and counting of debate is Eris.

The recent study of the dwarf planets Eris and Makemake reveals that they could be compatible with the emergence of extraterrestrial life. The dwarf planets of the Solar System, such as Ceres, Haumea, ...

While Eris is roughly the same size as Pluto and Makemake is about the same size as Pluto’s moon, Charon, both dwarf planets are far beyond even Pluto’s icy corner of the Solar System.

The dwarf planets in question, Eris and Makemake, are both found in the Kuiper Belt past Neptune's orbit and are far from the Sun's warmth, similar to fellow dwarf planet Pluto.

Eris is the largest dwarf planet in the solar system, larger than Pluto, and orbits at an average distance of 6,289,000,000 miles away from the sun, about 68 times further out than the Earth.