A new formation theory for Pluto's moon Charon could explain why Pluto is geologically active. Illustration incorporates NASA New Horizons terrain imagery. Pluto — demoted to dwarf planets status in ...

Pluto’s frozen face looks dead at first glance, but its most famous feature hints at something far stranger than a simple ice ...

Forbes contributors publish independent expert analyses and insights. An award-winning reporter writing about stargazing and the night sky. Artistic representation of the huge and slow impact on Pluto ...

As an astronomer, the question I hear the most is why isn’t Pluto a planet anymore? More than 10 years ago, astronomers famously voted to change Pluto’s classification. But the question still comes up ...

Scientists claim to have solved the mystery behind the heart shape on Pluto's surface, believing it was formed by the planet being hit by an object over 400 miles in diameter. This enormous region of ...

New research has shed light on how Pluto’s famous heart-shaped plane of frozen nitrogen creates winds in the dwarf planet’s thin atmosphere, that lead to vast discolorations on its bright surface. The ...

The heart is pumping nitrogen-dominated air around Pluto, according to a new study. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. Breaking ...

The exploration of Pluto wasn’t easy, but it sure was worth it. As David Grinspoon and I recount in our book, Chasing New Horizons, it took 14 years (1989 to 2003), about a dozen different mission ...

Sputnik is feeling the love. The huge heart-shaped plain on Pluto, made famous when the New Horizons spacecraft flew past in 2015, can keep its name. It and 13 other surface features on the dwarf ...