Pluto, with its heart-shaped glacier, as captured by the New Horizons spacecraftJPL/NASA Pluto will mark a birthday of sorts on March 23, 2178. No one is likely to be there to celebrate it, of course.

It's a question that has sparked debate across the world. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. Textbooks had to be rewritten. Members ...

When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. Pluto's atmosphere is going through a strange transformation, scientists are finding. The icy ...

With discoveries about Pluto from NASA’s New Horizons mission rolling in, here are nine of the most interesting facts about the former planet. 1. Pluto was first discovered by a young research ...

What color is Pluto? The answer, revealed in the first maps made from New Horizons data, turns out to be shades of reddish brown. Although this is reminiscent of Mars, the cause is almost certainly ...