Highlighting 10 major astronomical milestones of the past century in celebration of the Royal Greenwich Observatory’s 350th anniversary Founded in 1675 by King Charles II, the Royal Observatory ...

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

Pluto was discovered in 1930 in Arizona, but in 2006 scientists decided to cut Pluto from the planetary line up. Here is why Pluto isn't a planet.

Pluto was the little planet that could — until it couldn’t. Discovered in 1930 at Lowell Observatory in Flagstaff, Arizona, Pluto was hailed as the ninth planet in our solar system.

For decades, Pluto was celebrated as the ninth planet of our solar system. However, in 2006, the International Astronomical Union (IAU) redefined what constitutes a planet, leading to Pluto’s ...

It orbits Pluto at a distance of just 12,200 miles (19,640 kilometers) – for context our Moon is 20 times farther away from Earth. Pluto and Charon are often referred to as a ‘double planet’ ...

But why isn't Pluto considered a planet anymore? It starts with the definition of a planet — or lack thereof. Before 2006, there weren't strict criteria for a planet.

Pluto was demoted from a planet to a dwarf planet in 2006. So why is its status still so controversial today? When you purchase through links on our site, we may earn an affiliate commission.

The last time planet Pluto marched through Aquarius was 1778 to 1798, a span of years that saw the French, American, Haitian and Industrial revolutions, as well as the Age of Enlightenment, which ...

In 2006, the IAU famously dropped Pluto from the pantheon of planets because it did not meet the union’s criteria. As stated on the union’s website, a planet in the solar system: ...

Pluto soon became America’s favorite planet, especially after Walt Disney named one of his characters, a charismatic dog, after the newly found planet. Plutomania caught the country – and the ...

While Planet X was estimated to be about six times more massive than Earth, Pluto’s mass is only 20% that of the Moon, itself 1% of the Earth’s mass. Pluto is much too small to gravitationally ...