Elon Musk, under the username "Kekius Maximus," has joined William Shatner in advocating for Pluto's reclassification as a planet. Shatner playfully suggested Musk persuade the President via ...

The humorous exchange between Musk and Shatner also reignited the long-standing debate about Pluto’s planetary status. Pluto, discovered in 1930, was originally classified as the ninth planet of ...

Pluto has never been much of a planet — small, wired orbit, not much atmosphere — and questions about its status have been ... called planets without any debate." Levy, science editor for ...

U.S. astronomers hunting for "Planet Nine" have instead stumbled on what appears to be a new dwarf planet in the solar system's outer reaches.

Pluto is Arizona's official state planet Regardless of the debate about its status, Pluto is Arizona's official state planet.

But Pluto turned out to be too tiny -- it is smaller than the Moon -- and was demoted to dwarf planet status in 2006 ... it Planet Nine and kicking off a debate that has rumbled since.

But Pluto turned out to be too tiny -- it is smaller than the Moon -- and was demoted to dwarf planet status in 2006. There are now four other officially recognised dwarf planets, and Cheng ...

In 2006, updated research led to Pluto being controversially demoted to dwarf planet status by the International Astronomical Union. The reasoning was that Pluto's location in the far-flung Trans ...

NASA/JHUAPL/SwRI Until 2015, Pluto, the former ninth planet of the classical solar system, was largely a mystery—a tiny speck 3.6 billion miles from the sun. When NASA's New Horizons spacecraft ...

But why do Pluto and its fellow dwarf planets not enjoy the same status as the solar system’s eight regular planets? To officially be considered a planet, an object must follow three rules set by the ...

Earth has a newly-discovered neighbor in the solar system. But the heavenly body – possibly a dwarf planet à la Pluto – isn't a frequent visitor. Located beyond Neptune, its extreme orbit ...