Astronomers have announced the discovery of a new dwarf planet in our solar system, named 2017 OF201. Located far beyond ...

A new dwarf planet, discovered beyond Neptune and described as Pluto's 'cousin,' could void the hypothesis of a Planet X in ...

Curious Kids is a series for children of all ages. If you have a question you'd like an expert to answer, send it to ... .</ ...

In the cold, distant reaches of the Solar System, far beyond Pluto, astronomers have just identified what could be a new ...

Elon Musk, under the username "Kekius Maximus," has joined William Shatner in advocating for Pluto's reclassification as a ...

The inner planets, including Earth, took at least 100 million ... a place in the outer solar system that’s home to dwarf planets Pluto, Eris and Makemake and millions of comets. Meanwhile, Jupiter ...

Are planets in the solar system that are closer to the Sun older ... The inner planets, including Earth, took at least 100 million years, maybe more. To put it another way, the four planets ...

Pluto, discovered in 1930, was originally classified as the ninth planet of the Solar System. However ... many others — including members of the general public and prominent figures like ...