COLUMBUS, Ga. (WRBL) – Each year on Feb. 18, a whole day is dedicated to the former planet Pluto. Pluto was once the ninth planet in the solar system, but striped of that title back in 2006. Now ...

Until 2015, Pluto, the former ninth planet of the classical solar system, was largely a mystery—a tiny speck 3.6 billion miles from the sun. When NASA's New Horizons spacecraft arrived at the ...

Pluto was once considered one of the solar system’s planets but was later downgraded to the status of ‘dwarf’ planet after several more similarly sized objects were discovered throughout our solar ...

A high-resolution image of Pluto taken by New Horizons on July 14, 2015. The image has been color-enhanced to show the different geological features of the surface. NASA / Johns Hopkins University ...

Five years ago today, the solar system lost a planet. On Aug. 24, 2006, Pluto — which had been known as the ninth planet since its 1930 discovery — was demoted to the newly created category of "dwarf ...

When you buy through links on our articles, Future and its syndication partners may earn a commission. The heart-shaped Tombaugh Regio feature on the surface of Pluto. | Credit: NASA/Johns Hopkins ...

Pluto is an icy dwarf planet that usually lies beyond the orbit of Neptune in the Kuiper Belt. The dwarf planet is smaller than Earth's Moon, with red snow-capped mountains as tall as the Rockies.

Annotated version of the Pluto photo taken by New Horizons on July 11, 2015, showing linear features that may be cliffs, as well as a large circular feature that could be an impact crater. Image of ...

Although we now believe we understand how the Sun and our solar system formed, this early view is an illustration only. When it comes to what we see today, all we have left are the survivors. What was ...

When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. The long-standing debate over Pluto's planethood recently got a public boost from NASA ...