The result? A patchy, pixelated sphere just 12 pixels wide. Even from these images, Pluto seemed pretty intriguing. The light and dark pixels seemed to suggest geological or atmospheric activity.

The most highly anticipated space photos of the year are without question the ones that NASA is releasing of Pluto. Today, at 2 p.m. ET, the agency will unveil their latest batch, which you can ...

“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 ...

An curved arrow pointing right. NASA's New Horizons probe flew past Pluto last July, and it took the most detailed images of the planet that have ever been seen. NASA just released some of the ...

When NASA's New Horizons probe flew past Pluto in July 2015, the images it returned astonished scientists. Not only was the surface more varied than anyone had predicted, but the photographs also ...

FLAGSTAFF, Az. – Whether Pluto is officially a planet is the least interesting thing about the runt of the solar system, astronomers will tell you 95 years after the discovery of the fascinating ...

If you stood on Pluto's surface, the Sun would merely appear to be a very bright star. Although previous images showed that something was happening on Pluto, with an average temperature of -240C ...

Images and data have been flowing in since NASA's epic New Horizons Pluto flyby on Tuesday morning, and the latest image released shows an exaggerated color map of Pluto and its moon Charon.

Clyde Tombaugh discovered Pluto in 1930 at Lowell Observatory in Flagstaff. Here's how Pluto won - and lost - its planetary status.

One of the most memorable images taken by New Horizons is that of Pluto’s "heart" feature. The heart-shaped glacier, nicknamed Sputnik for Earth’s first human-made satellite, is nearly 600 ...

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 ...

It wasn’t until 1930, about 15 years after Lowell’s death, that another Lowell Observatory astronomer, Clyde Tombaugh, would find Pluto. "Interestingly, once the planet had been found, they went back ...