Almost 10 years ago, a NASA spacecraft was able to take several photos of Pluto, known for decades as a planet before it was ...

With Pluto's "demotion" to dwarf planet status, it’s understandable that the IAU faced criticism from the public for ...

Viewers who watch the show may wonder what happened to Pluto in 2006 and whether any of the planets discussed in the show might lose their status next ... they be called "dwarf planets"—much ...

Since its discovery in 1930, the dwarf planet has revolved beyond ... (See what scientists say about Pluto’s status as a planet.) As early as the 1840s, a tricky calculus foretold the existence ...

A blue atmosphere, smooth areas, and youthful mountain ranges - this dwarf planet is full of surprises. When NASA's New Horizons probe flew past Pluto in July 2015, the images it returned astonished ...

For one reason or another, some people are still upset about Pluto's demotion from planet to dwarf planet. This demotion, by the way, occurred all the way back in 2006. So, what does famed ...

The newly-spotted dwarf planet joins a cohort of other small worlds in that part of space, including Pluto. Together, dwarf planets can help scientists learn a lot about how the solar system ...

For that's the day my father, Clyde Tombaugh, a farmboy-turned-astronomer, discovered Pluto, becoming the first American to find a planet. (Or a dwarf planet, as it's now officially known.) ...

An curved arrow pointing right. NASA's New Horizons spacecraft took us to Pluto for the first time in July 2015. Scientists are astonished by the incredible features they've observed on the dwarf ...

Many planets have moons, and some planets have many moons - Saturn has more than 50. The Earth has just one moon - the Moon. Pluto is a dwarf planet. As the name suggests, a dwarf planet is ...