Pluto is probably best known for being a demoted planet. In 2006, the International Astronomical Union stripped it of its ...

On the 95th anniversary of its discovery, Pluto remains one of the most beloved and enigmatic worlds in our solar system, ...

Feb. 18 marks the 95th anniversary of the discovery of our outermost planet-not-planet. Here's what to know about the short ...

The controversy endures over Pluto's true status, but the solar system underdog continues to capture hearts across the globe. Clyde Tombaugh didn't set out to discover Pluto when he sent his ...

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 ...

Pluto was discovered in 1930 by Clyde Tombaugh ... It has a methane, nitrogen and carbon monoxide atmosphere and a surface temperature of minus 378 to minus 396 degrees, too cold to sustain ...

3 - Pluto is covered by a thin, blue soot-like haze. Scientists think it’s created by sunlight interacting with nitrogen and methane in the atmosphere. 5 - Pluto has an ionized tail like a comet ...

In August 2006, the International Astronomical Union made the controversial, but correct, decision to demote Pluto from its ...

Scientists at NASA for the first time have been able to observe the make up of Pluto and other small and icy celestial bodies ...