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 ...

Of the five dwarf planets in the Solar System – including Eris, Ceres, Makemake, and Haumea – Pluto is easily the best-known ...

Ever since Pluto was demoted from planet status, astronomers believe a real Planet Nine exists in the solar system ...

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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 ...

This transit of Pluto in Aquarius will make you decide on what kind of legacy you would like to leave behind – what ...

And so on May 1, Lowell Observatory announced that Planet X would be named Pluto. But with its peculiar, tilted orbit and confoundingly small size, the world remained an enigma. Over the years the ...

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 ...