On Aug. 24, 2006, the International Astronomical Union (IAU) decided that Pluto wasn't a planet anymore. Instead, Pluto is ...

With a diameter of 1,440 miles, Pluto is farthest from the sun. While major planets make roughly circular orbits, Pluto ...

A distant world no longer silent. When NASA’s New Horizons spacecraft flew past Pluto, it shattered expectations - capturing ...

In Roman mythology, Pluto is the god and ruler of the dead. For a return mission to the dwarf planet, Howett and her ...

Pluto, once considered the ninth planet of our solar system, has been a topic of intrigue since its reclassification as a ...

For nearly a decade, the New Horizons Space probe has been flying toward Pluto in hopes of capturing the first real photos of it.

Euphoria broke out at NASA as space probe New Horizons sent back a signal Tuesday, confirming a successful Pluto flyby.

Gingerich, despite being the former head of the same committee that voted on Pluto's demotion, argued that Pluto was in fact a planet at the Harvard-Smithsonian debate.

The space probe began making discoveries even before today's flyby. — -- Three billion miles and nearly ten years of travel led up to the moment NASA's New Horizons probe zoomed past Pluto ...

NASA's New Horizons spacecraft has beamed back the first color image of Pluto and its largest moon, Charon.

Following the spacecraft's big revelation of just how enormous Pluto's moon Charon was in 2013, New Horizons is now within sight of all the known members of the Pluto system, according to NASA.

After soaring by Pluto in 2015, the spacecraft pressed deeper into a region of the solar system known as the Kuiper Belt. This expanse of space is home to icy objects like Arrokoth, a snowman-shaped ...