roughly the size of Arizona from north to south. Pluto was discovered in 1930 by Clyde Tombaugh while he worked at Lowell Observatory in Flagship, Arizona. Sputnik Planitia is a white basin ...

This huge astrological shift is a total game-changer. Here’s how Pluto in Aquarius will affect you—for the next two decades.

Scientists have noticed something strange about Pluto and its big moon, Charon, and it's making them rethink a lot! Unlike most moons, Charon is almost half the size of Pluto, so they actually orbit ...

Pluto, our power planet of seismic change, is stationing direct in the sign of the sea goat for the final time in our lifetimes. On Friday, Oct. 11, Pluto will go direct at a fateful 29 degrees of ...

The world's largest bee -- a giant insect roughly the size of a human thumb -- has been rediscovered in a remote part of Indonesia in its first sighting in nearly 40 years, researchers said Thursday.

From afar, Pluto once seemed boring and dead. After all, the dwarf planet is only two-thirds the size of our moon and resides more than 30 times farther out from the sun than does Earth.

But the real nail in the planetary coffin came in 2005, when astronomer Mike Brown discovered Eris, an object about the same size as Pluto orbiting beyond Neptune. So, in 2006, when astronomers ...

Measuring about half the size of Pluto, Charon is unique among moons because its mass is large enough that it and Pluto orbit ...

About the same size and shape as a grand piano, New Horizons travels 300,000 miles per year, faster than any other man-made object. Having launched from Earth in 2006 and photographed dwarf Pluto ...