Being heartbroken for 2 months fades in comparison to Pluto’s heart that has been broken for billions of years! Pluto’s mesmerizing heart was captured for the first time in 2015 by NASA’s ...

“New Horizons shattered a major paradigm of planetary science,” says Alan Stern, the mission’s principal investigator. “Pluto turns out to have as much complexity as Mars or Earth, so much so that I ...

Neither one is “big.” Earth’s moon is 2,160 miles in diameter. Some scientists believe Pluto should be upheld, but others suggest that Pluto, UB313 and other icy denizens of the Kuiper Belt ...

Pluto was last and least of them. An icy dwarf only half the size of the United States, it was on average 3.7 billion miles from the sun. It also has a decidedly strange orbit that was highly ...

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 ...

Far from being flat and boring, Pluto seemed to be full of mountains, plains and maybe even "snow". By measuring the size of the shadows, we could estimate the height of these peaks at over 4,000m ...

Pluto was discovered at Lowell Observatory in Flagstaff, Arizona in 1930 and was considered our ninth planet until 2006. The International Astronomical Union reclassified Pluto as a dwarf planet ...

The objects range in size, with diameters less than tens of miles ... open image in gallery Pluto was once our solar system's ninth planet, but has been reclassified as a dwarf planet.

Pluto, discovered in 1930, was once considered the ninth planet in our solar system. In 2006, the International Astronomical Union reclassified Pluto as a dwarf planet because it doesn't meet all ...